Absolutely, yes, should've mentioned that. Most of these tools are for internal use at my company and I know what terminals they run in – even better: I can just test it.

But honestly, some of these run in tmux on my machine and in the Windows Terminal in production and both do the same thing. I guess if you assume modern, emulated terminals and don't do exotic stuff (I mostly move the cursor and clear lines), you can go some way without termcap. It's a tool from a time when terminals where physical machines.