Seems to me that the stress test, also known as Bitcoin Giveaway, has failed to harm the Bitcoin transactions in any way.
While Mem pool is quite large and tx back-log has also grown, it seems that the only back-log are the spam transactions them self.
Real transactions are going through as usual

I only made one transaction today. It is unconfirmed after 8 hours.
I sent it using "bitcoin-cli sendtoaddress ...", let bitcoin core select its own fee - I think it's meant to use "smart fees" now - and it decided to use a fee of 300 satoshis. FFS.
I think these dust addresses and keys will float around with a balance for a while. It's just not worth the effort to write out a 5 input raw transaction in core just to receive 0.00002 after the 0.00003 in fees. And it's too much work to write out a 100 input raw tx let alone these are filled with 3,000+ inputs.