I dont think that at all. I think when people ask “why not mastodon” it’s coming from a place of misconception. Their own exposure to this knowledge and information is disproportionately higher than the world average, but it’s so much higher they can’t really comprehend how low the average is.
Much like a billionaire thinks a banana costs $10, a lemmy user thinks people know about mastodon at all.
That about sums it up
X - Same as twitter but with more nazis
Bluesky - Same as twitter but with more socialists
Threads - Same as twitter but with more boomers
Mastodon - Same as twitter but with more autism