Every single thing in your post makes zero sense.... it is all breathless hype.
Not true. Most of the post makes sense. Trustlessness and decentralization are pretty much the only benefits to bitcoin and others like it. There are obviously real costs for these features, but also real benefits. Do the benefits justify the current valuations - only the market can determine that. I personally am quite bearish on almost all cryptoassets (so I would not be considered a "pumper"), but certainly you must see the threat they pose to the incumbent masters of the monetary system?
Another example I've seen in real world use is the "startup" retail banks popping up throughout Africa that have no offices, and are purely operated over mobile.
The lack of regulation in these countries have lead to massive leaps in innovation in the banking space. Seriously, you can read articles about it - but until you go to countries like Nigeria or Kenya and try it out, it's incredibly impressive.
I'm not a major investor in crypto anything, I think most, if not all, coins created right now are completely pointless - but blockchain as a public, auditible ledger and fiat-backed crypto/tokens I think we'll see some very cool innovation that own't overhaul the banking industry completely. There's too many smart people in banking to get "caught out".
However I do think we'll see some new contenders in the space as the industry begins to break down into smaller units. And that'll be good for everyone.