

But you’re misrepresenting my argument.
Hardly, I’m directly addressing your statement that case insensitive is intuitive to users, grandmas or otherwise - I give examples where it’s not initiative or obvious which filenames match. I didn’t mention ease of implementation at all.
The principle of least surprise is an important UX consideration, and your idea of effectively introducing collation and localising which files conflict is just trading one problem for another set of problems and suprises (e.g. copying directories between drives with different settings).
Are you saying you think it’s ridiculous to end support “already”?
I think it’s likely that anyone still using 486s isn’t updating software anyway, so it’s unlikely to matter aside from niches like retro devices. Luckily, open source means that if there’s a genuine desire there’ll probably be a fork to provide it.