isn't the dinamic fee the one that is labelled as a "recommended" on core? so this is not something new if this the case, but i admit i was not using it, i prefer to set it to 10k satoshi and forget
Same here, I am not using it and don't need it. I nowadays include a fee of minimum 0.0002BTC for each transaction that I send. It works perfectly fine as my transactions mostly get included in the next block.
I just check the mempool to see if it's backed up. If not, 0.0001 is fine. If there is more than 4-5k transactions pending, 0.0002 has always sufficed. I consider this incredibly cheap, to be honest. I'm sure there's still plenty of spam (hence the cheap fees) but I think these are just good signs that there is real demand to use bitcoin.