Sure, ok, that's still my daily driver, it's incredibly stable (and no, it's not fucking outdated), but other than that it doesn't help so much against accidentally borking your system.
It's a specific unicode character, though most keyboards don't just type it for you.
On Linux I use the Cinnamon desktop with Cinnamenu, if I hit the super key and start typing “interrobang” it selects the correct result for me quite quickly, I hit the enter key and it's copied to my clipboard.
On my smartphone I use SwiftKey which has a clipboard manager where you can pin copied text and ads a tag for it; I pinned it with the tag ib so when I type “ib” it suggests that interrobang. This works both on Android and iOS.
Also, on macOS you could use the character picker (hit the fn key on an Apple keyboard) and search it in a similar way.
Wait it is?
The last sentence looks jumbled to me... I could use “English isn't my first language” as a defence but I get the feeling I'm just slow or something
I've found it needed a lot of extra steps, plus fidgeting with the OSTree defeats some of the safety/stability of it all.
Bazzite, at least, recommends against using OSTree blindly as that's meant for sysconfig and recommends using Homebrew instead, as this lives in your user space and touches very little; but even installing libqalculate gives memory issues. Most things I attempted to install did, actually.
The Ruby interpreter installed just fine, and was the only CLI program that installed just fine IIRC.
Now, I feel like it's less of a hassle to Just Use Mint®, especially since I've got it installed anyway.
This is the way.