Unless they're covered by a design patent, it's a free for all anyway in many places: https://en.wikipedia.org/wiki/Intellectual_property_protecti...
So you can take any typeface and trace/redraw it just fine. But you can't use the original font files unless you have proper license.
And if so, why people still even bother with all that "font licenses" stuff and such? I'd think the only reason to buy a font by now must be when design studio actually does custom work for you. And the emphasis is on "custom", because it isn't truly "for you": anyone will be effectively free to use it after you use it once anywhere.
So in same way as one would expect “its just a CRUD app” it should be trivial computing task to make a “different” copy. No unless you do some decompilation of the font which is breaking the license.
About why people bother… maybe the biggest issue typography (and lot of design in general) have is that if done right it's mostly invisible or natural. You notice typography only when it's done badly - it's very subconscious. That doesn't mean it's not ongoing topic with experts dedicating their lives to it. And for them even differences between variations of Helvetica matter. If you look around yourself you will have typography absolutely everywhere - you have probably 1000s of different fonts just in your home. You probably don't notice them but you would if our society standards were lower.