Using something like Monero's dynamic block size seems like a simple fix to a huge issue.
That won't work on Bitcoin. You can ask Monero's developer himself (I forgot the exact reason why).
Agree that block sizes can't keep rising infinitely, but a simple increase _is_ a tool available to us.
A hard fork isn't something simple.
The proposal is a temporary increase to address immediate concerns, then focus on other scaling improvements (weak/thin blocks, IBLT, a proper implementation of SegWit, etc). This sounds more sensible and less risky to me than where we are now.
It isn't needed since we're getting Segwit now (however both might be too much right now).
Maybe the too strong influence of certain Core devs (and Adam Back, oddly) does need to be addressed. I don't see it as a power grab, more of a reset.
That might be possible. However, surely it is better to be influenced by Adam than Coinbase.