The important points are
a) when you reach a peek its immediately degrading
b) the the last "peek" is a platform beyond which AI cannot become better. Poor business that has such "good enough" limitations.
And for me the most threatening real life experience is, that we are currently losing the best old world engineers who still outperform AI in terms of doing what we really need and the quality the final product finally has and still will improve over time, whereas wie AI you never know when the next "restart fom scratch will happen again".