I agree with @wizard . Unless you're toting a fairly unique username, it doesn't "see" you at all...
I asked it:- "Who is 'mikewalsh'?"
Based on the information available, "mikewalsh" could refer to several individuals:
Mike Walsh, the Australian radio and television presenter. He is known for "The Mike Walsh Show" and has received several awards, including the Gold Logie Award. He is now involved in owning and operating live theaters in Australia and the United Kingdom.
Mike Walsh, the futurist and author. He is an internationally recognized speaker and consultant on technology and leadership. He has written several bestselling books, including "The Algorithmic Leader." He also hosts a podcast called "Between Worlds."
Michael Walsh, the American journalist, author, and screenwriter. He is a former music critic for Time magazine and now contributes political and cultural commentary to various publications. He has written novels, non-fiction works, and co-wrote the Disney movie "Cadet Kelly." He also edits the website the-pipeline.org, which focuses on energy issues. He was born in the United States in 1949.
Michael Walsh, the Irish politician and newspaperman (1810–1859). He was active in New York City politics and founded the newspaper "The Subterranean."
Michael Walsh, the Canadian film critic and journalist. He worked for "The Province" newspaper in Vancouver for many years and also appeared on television and radio reviewing movies.
Mike Walsh, the sports reporter for The Berkshire Eagle. He covers local sports in the United States.
Michael J. Walsh, a writer focusing on Catholic theology and history. He is the author of several books on the subject.
Without more context, it's difficult to determine which "mikewalsh" you are asking about.
There are advantages to NOT trying to hide behind a unique 'alias'..!! 
OK. Let's be a bit more 'specific', shall we?
"How many users called "mikewalsh" are in the Linux community?"
While it's impossible to provide an exact number of users named "mikewalsh" within the entire Linux community due to its decentralized nature, we can identify some prominent individuals with that username in various Linux forums and communities:
Mike Walsh on the Puppy Linux Discussion Forum: This user appears to be a very active and highly regarded member, having reached the milestone of 6000 posts by September 2024. Other users on the forum have explicitly acknowledged his contributions and expertise within the Puppy Linux community. He also seems to maintain a collection of "portable" applications for Puppy Linux.
mikewalsh on the Linux.org forum: This user has been active on this general Linux forum since at least 2023 and has contributed to discussions on various topics, including problems with Puppy Linux and 2FA (Two-Factor Authentication).
mikewalsh on the Linux Foundation Forums: While this name appears in the context of forum usage recommendations, it's unclear if it refers to a specific active user.
mikewalsh on archive.org: An account with this username hosts a repository named "Puppy_Linux_mikewalsh_portables_repo," further indicating their involvement with the Puppy Linux distribution and the creation of portable applications.
It's important to note that these are just the instances that appear in publicly accessible forums and discussions. Many other individuals using Linux may also go by the username "mikewalsh" on various platforms or within private communities.
Therefore, while we can confirm the presence of multiple "mikewalsh" users within the Linux community, particularly within the Puppy Linux sub-community, providing a precise count is not feasible.
Um.....yeah. O-kayyy.... THAT'S different.
Context, it appears, is everything. By posing just my username, Gemini didn't see me at all. I 'blended into the background". What do they call this....."hiding in plain sight"?
We had to drill down with more detail to find me. Suddenly, there I am. All 4 of the above are me. 
But Gemini still hasn't completely uncovered me. I have a LOT more online a/cs than that, although I've stayed with "mike walsh" for anything Linux-related. That way, you're easier to relate to as an individual.
Many other a/cs are NOT using "mikewalsh", or any variation thereof. Some use simply emails; others use nonsense names dreamt up off the top of my head (but never re-used).
(I really wish I understood this obsession with 'post-count'. Many people have mentioned it to me, or about me when conversing with others.....like it's a kind of 'badge', or summat. Even Gemini mentions it! WHY? Who cares..?) 
Mike. 
