Especially on a Linux distro, you could install a 3rd-party package that adds an emoji picker system-wide, as opposed to in one app.
If every app brings its own emoji picker, then you end up with a different interface everywhere.
If every app brings its own emoji picker, then you end up with a different interface everywhere.
This whole post is about someone being upset that Firefox finally did support the system level interface and shortcut. And you're upset about that while asking for consistent interfaces. Some people can just never be happy I guess.
I shared it as a blog post as I've already had two people asking me privately if I know how to get rid of it, as I'm the reason they use 1Password in the first place, not because "I got so upset I couldn't contain it" or something like that. Surely there are more wondering it then.
I also don't think parent seem upset either, but I won't attempt to speak for them. But arguing for/against a position doesn't mean they aren't happy or that they are upset, conflicting views and perspectives is normal, even within the same person sometimes :)
As I said, as long as 3rd parties aren't overriding the built-in functionality by default (e.g., using the same keyboard shortcuts), there's no problem. 99% of FF users will probably never even know it has its own picker.
It is of course great for third parties to add features, they should just work system wide. If text entry looks different in every app, that sucks.
You aren't required to use anything that you don't like. The fact that you are complaining about a non-problem is odd.
Lastly, incremental improvements generally come from outside the OS. If FF ends up adding something novel/interesting to their emoji picker, the major OS's will probably adopt it at some point. That would never happen in your world, where only the biggest companies get to innovate.