My biggest criticism is more that the widgets library really should already _be_ there, and ideally updated automatically, on a client's system.

Hello World (GUI) shouldn't be a 50MB deliverable. If I'm providing someone with a toaster I shouldn't have to ship a whole mobile home. Nor should that end user need to park 300 mobile homes on their hard disk.

There are other criticisms about wxW in specific linked from the wikipedia page... https://en.wikipedia.org/wiki/WxWidgets#Criticism

Dolphin's is illustrative of the pain involved in using that widget set. https://dolphin-emu.org/blog/2017/06/03/dolphin-progress-rep...