First, my apologies for answering your "because Trump" with "because Biden". It was a knee-jerk reaction to politicization of an argument that IMO has nothing to do with politics. If I had to pick "because something" I would say "because Iraq war / G.W. Bush" which started this fiscal debt spiral.

That said, I do not immediately agree with either of your points here. On changing the SLR, to the best of my knowledge it gives the bank an option, not places a requirement on them.

On the SVB collapse: that was a bank run, plain and simple. That particular one was caused by jumpy clients (startups) that reacted to the mark-to-market correction due to the raised rates. The bank's chief risk officer probably screwed up pretty badly, but bank runs can happen to ANY bank, large or small. If enough Citibank, BoA or Chase clients decided to move money out those large banks would be in the same boat (i.e., unable to fulfil those request, or insolvent).

The reason most banks are mostly safe from bank runs most of the time is that small clients believe they will be bailed out by the FDIC (which does not have enough money to bail everyone) and large companies believe they will be bailed out directly by the gov't, printing money as needed to save systemically important banks. But smaller banks do get insolvent regularly, with over 500 since my "because Bush" point of 2001. Nothing special.

The only way out I think is via financial repression, holding rates below inflation, partially inflating gov't debts and partially wiping out savers (and pensions that do not adjust for inflation and a ton of other things) and maybe partially growing the economy out of it. This is a long process, IMO likely to play out over the next 10 years or more and will be painful for those caught in front of this wreck. But it has nothing to do with <insert your evil president or party>" now. My 2c.