tl;dr: People are blowing a lot of smoke to try to achieve their own aims and pretending to be a lot more certain about it than they really are. It's an important question. But you probably don't need to panic about it in the short term.
I sort of agree with your post.
I do note nothing gets done to fix these killer flaws, e.g. centralization of mining.
We always push it out into the future when it is too late already, e.g. Bitcoin.
Okay so now we know what the parameters are. So I will go back to work on solving the fundamental problems and Monero can continue moving forward as a stop-gap measure.
Agreed?
(so I can go silent now I hope)