I've noticed the opposite. Seems that it depends on where you're looking and what you're looking for.
Reddit has a few pro-AI subreddits too, so you might find a better audience there.
The most recent noteworthy counter-example is archive.org breaching their "one purchase = one concurrent loan" limit during COVID, and they lost that court battle.
If you're equating libraries to LLMs, then every leading-model company would have purchased ~every book, newspaper, movie, and song in existence at least once. They have not.
I would make the argument that open weights models are ethically still maybe questionable, but at least it's making the output a public good
For example, when a Paper Mario decomp/port used AI, the subreddit for the series pretty much tore it to shreds for that. Mario fan communities in general tend to be really heavily against it, with Mario Fan Games Galaxy, SMW Central, and SMBX having rules which are basically "no AI allowed for submissions ever".
Meanwhile my experience on sites like ROM Hacking.net is that AI is more accepted/tolerated there.
So, it's very much a series by series thing. Best to check what the Mega Man community thinks of LLMs before you post it.