Port something like this to OpenBSD and then say that this sort of thing is not hard work. (-:

It's very hard work, especially nowadays. The sweet spot was probably in the 1990s, when novices were still likely to know that prime sources of knowledge about this stuff were posts on Usenet, or shell archives of text files written by Daniel J. Bernstein.

https://jdebp.uk/FGA/bernstein-on-ttys/

I speak from experience of being someone who did my own tweaks to screen in the 1980s, and who has written other similar programs from scratch.

What's your point besides whining about the general state of "delevopers", whoever that is? Are you volunteering to take over maintenance of GNU Screen?

Really, the gall to complain about "laziness" when all you're doing is spreading negativity on a forum.