It's actually been posted here Loyce. You can go there for more info or discussion (if anything can be discussed about it).

How do they do this? Did mempool.space cooperate on this by changing their code? I don't see how they can plan their transactions in such a way to creates patterns: in any other block the lowest fees are sorted on the left, the highest fees on the right.

I'd argue it's really cheap to do! They still get the block reward, they get the fees they paid for their own transactions, and all they miss out on is about 0.03 to 0.08 BTC on fees from real transactions. That's only 1 or 2% of the block reward.

I'll read it as Bitcoin AL

Good point, mempool's "expected block" gives a better estimate. But it confirms what I said: that's only 2% of the block reward.

I'd rather not give even 0.2% of my reward to SECPOOL's reputation on painting blocks, if I was a miner. 

Completely unprofessional, unless the miners were alerted, but irrational either way.

It looks like the mining pool has 0.499 BTC to distribute.

People get so nervous don't they? Over the weekend transactions of at most 2 sats/vByte have been confirming quickly but there have been two blocks recently that have taken a long time to confirm, I think it was 880875 and 880876, the first taking almost an hour and the second half an hour. I was in a bit of a hurry to send a transaction and did so at 5 sats/vByte but while I was waiting I saw one at 300. I know that sometimes some wallets have suggested rates that overpay, and also maybe people prefer to overpay in case transactions keep accumulating, but that much?

Maybe it's not the first time this topic has come up in the thread but I'm not going to search through all 62 pages.

Having a bitcoin at that address I guess the guy is loaded and doesn't mind overpaying but it's still 5% when he could have paid a lot less.

But there is something else that strikes me. How come the change address is the same as the one that sends? I believe that all the wallets I have had, of various types, always create a new address for change.

I only now checked 3AWDcijmqdgb4Hxpra3p2k8nfm76UFCDed: it's been paying around 300-350 sat/vbyte for at least a year (I didn't check back further). It has 21,446 transactions, so it's probably an exchange. They even have multiple transactions confirmed in the same block, instead of using "send to many". Clearly, they don't care about spending wasting a lot of money on transaction fees.

Large exchanges have been heavily overpaying for years. I don't see the point either, so my assumption is they must earn so much money they simply don't care about millions of dollars.

This sounds ridiculous, so I'm not even surprised if it's true