The problem with Unifont is that is was never designed to actually support real text, it just has glyph support. So if you need "it can do every language I might want, while looking pretty good" you're far better off with the (much newer) family of NoTo fonts, which aren't just free to use, but explicitly use the modern SIL Open Font License.

Noto is also a scalable font with multiple weights and styles (e.g. bold, italic, etc). Unifont is a 16-pixel bitmap with no styles, so it's only really usable at one size (or maybe two if you want 32px text).

> which aren't just free to use, but explicitly use the modern SIL Open Font License.

Unifont is also dual-licensed under GPLv2/SIL OFL.

Yeah, I can't really speak well about other languages, but these Armenian letters look really rough.

The only problem with the Noto fonts (installed in Ubuntu for example by default) is that now you have to scroll through hundreds of useless squiggle fonts in your font picker.