Is it even possible for Linux to get enshitified? Wouldn’t the open source community just go back and fork from before the enshitification began? Surely, enshitified versions could be made but people would simply not use them unless there was some proprietary component they wanted.

That seems 100% fine to me. If you’re looking for an excuse, by all means upgrade but those numbers seem acceptable.

Unrelated to their question but I think Linux users would be more likely than windows users to opt out, when presented with such a prompt.