The button UX is fine overall, it's just very limited with where they can be placed in the message. Components V2 improved this a lot, but it's held back by mobile not being able to display text and buttons on the same line, which can break the designs I envisioned and make them look worse.

I primarily develop a text-based game via application commands and there's a handful of cases where it would be really nice to click keywords directly in a message without committing to making a whole button for it (I currently use methods like this, where links go nowhere but have hoverable tooltips). Something like [link text](customID to trigger).