I'm looking for any reason why the transaction fees drop but I can't find anything.
I think that the ordinal-spam stop or slowdown their activities... i am not sure about it.
That's the first thing I thought of, and it seems most likely, as we have had a full mempool for many months, but I remember that there was a small drop in July and then it went up again. In any case, the drop now is considerable, and let's hope that the spammers of the ordinals get tired of it.
This days there is low congestion on the mempool, and that is good for users tha want to consolidate their utxos, recently some 3 sat/vB transactions has been accepted in some blocks
Anyway regardless this low fee hours, there are some poor managed exchanges or entities that looks they don't know what are they doing or how the fees works on the bitcoin mining process
looks like they think that if they keep sending more fees the miner is going to mine faster or something like that. AND THAT IS NOT TRUE.
The miner actually don't care how much fee you pay they are going to mine at their same speed proof of that is that the
~19.82 Bitcoin fee stay almost 7 minutes on mempool before being mined:
I know that those entities have enough to throw away hundreds of sat/vB without care about of it, but Is not their main goal to maximize their profit?
I as a private individual have sometimes committed that sin. Send a transaction that I was in a hurry to get confirmed, a couple of hours at most, and instead of sending it with an adjusted fee to make RBF if necessary later, I simply overpaid for the fee and had it confirmed in the next block. But as you rightly say, companies should minimise costs and one aspect where they can do that easily is this. But what I don't understand is that you are giving as an example a transaction that was clearly by mistake and that the miner returned
and you yourself echoed it.