If only they had usable C bindings so it could be used from more languages. Such a shame. Making it possible to use from Rust, Nim, Go would really give it a second wind of users.
It's a bit funny that people don't realize that "they" are "you". wxWidgets is an old school open source project, people are supposed to contribute to it because they have their own itch to scratch.
FWIW wx has always been very friendly to new contributors, so I'd really encourage people who are annoyed by something in it to just propose changing them on wx-dev.