Technically speaking you can't attribute a stock/asset to a bubble without it crashing. Until then its purely speculative which has no underlying foundation.
That is the very definition of stupid. You can't say something is in a bubble until after the the bubble has burst? By your words no-one should therefore ever fear a bubble in anything because nothing is a bubble until after the fact. Can't you see yourself how silly your position is on this?
To address the second point I don't think it's necessarily an over-dramatisation but rather just an indicator of how big this scalability issue is. Changes are needed, that's for sure. The only issue is finding a solution that everyone can agree on.
A fundamental problem in Bitcoin. All agree there is a big problem, but no-one can agree on actually doing anything about it - because part of the community makes good money from the flaw. This will never get fixed.
You're ignoring Lightning network, Schnorr Signatures, etc., that many others have pointed out.