It's not that hard, technically speaking, though of course it takes skill to come up with a set of glyphs that work well together and such.
Also, there are websites that can scan your handwriting and turn it into a font file, which is pretty cool. I have a font I created of my wife's handwriting.
xattr -d com.apple.quarantine path/to/file
will remove that shit.Though personally, I get as much software as possible on my work MacBook through Nix, and only use
.dmg
files if absolutely required.