Entry of long 25th word passphrases springs to mind. I guess this thing is a password manager too maybe?
Why does that hardware wallet needs a full keyboard, when SeedSigner works fine with just 3 buttons?
Discussion
Honestly, buttons are pretty much the worst part of the ColdCard UX, ever since the Mk1 didn't even have any.
The Mk1 had... I dunno capacitive touch? It was awful. I had to find the right USB power source just to use it. Sometimes it would just glitch and stop responding and then suddenly go apeshit.