They reacted pretty quickly to the butterfly keyboard fiasco. By the time users received the shipping products of the first gen, the second gen were already in the pipeline so there was a slightly modified with only a dust cover being added. There was no third gen.
Hopefully iOS 26.x releases will continue to correct Liquid Glass, but I'm guessing iOS 27 is well down the path with it still integrated. Maybe iOS 28 will see sanity return???
Second gen butterfly keyboard broke a lot too. And then there was the no-esc touch bar, and the removal of inverted-T arrow keys... It took a few years of no good mac laptops before they backpedalled enough to get back to where they started
I’m pretty sure butterfly keyboard was made worse when it came to the hotter rubbing higher power Mac’s. I rarely saw folks with the original 12” low power model having issues.
It was not an entirely bad concept for the device it was conceived for, but Apple has a habit of unifying their technologies to all their products and sometimes, like with Liquid Glass, that seriously doesn’t work.