The key difference is that central bankers were in a very different state of mind in 2008. MMT realy imposed itself post 2008.

So while it's relevant to brace for a small crash due to interest rates adjustments if inflation continues, I wouldn't bet on a full scale snowballing cash grab, that killed relatively healthy institutions like in 2008.

Short term money market have been greatly improved and central banks have shown multiple times their readiness to intervene.

The part that is always glossed over in MMT is that taxation is thr regulatory factor. Except that in this low trust political climate it's absolutely impossible that anyone manages to raises taxes.

Thus, I think that inflation is the greatest of current risks. Especially unacounted inflation (housing, healthcare services...).