Sensible per account settings certainly are. But these almost exclusively aren’t, because they aren’t really account-related settings.
My eyesight certainly doesn’t change when I switch Lemmy accounts/instances, so why the heck should the font size?
Even if there were a genuine use-case for having different font sizes, themes, media-handling per account/instance, do you genuinely think that the vast majority of all users want entirely different app settings per Lemmy account and have them revert to their defaults each time they log into a new account, or would the majority just want to set these things up once and have them apply to all accounts automatically?
Per account settings, they way they are done here, would be a terrible default. As it stands, though, that’s not just the default, it appears to be the only option.
That’s pretty cumbersome, isn’t it, though?