If you look at the graphic, you can see that there are still a lot of people paying more than 50 sat/byte in a transaction (even 176 sat/byte). They could get a next block confirmation with 3 sat/byte, but their software somehow told them to use a higher fee.
This is why I always encourage people to look at the mempool themselves and not just accept the fee given to them by a website or, even worse, their wallet. Whenever the mempool fills up, these automatic fee algorithms tend to constantly try to "one up" each other and end up pushing their suggested fee higher and higher. This positive feedback loop ends up with everyone paying higher fees than they need to. Later, when the mempool empties, these algorithms are still stuck in this loop, and continue to rapidly escalate their suggested fee completely unnecessarily.
If we look at the mempool when the last block was mined, then 4 sats/vbyte would put you 0.1 MB from the tip. 5 minutes later and with only 0.5 MB of new transactions, it is now 250 sats/vbyte to get 0.1 MB from the tip. This is completely stupid. Every single one of those transactions could have paid 4 sats/vbyte and confirm just as quickly. If everyone took 30 seconds to look at the mempool, it would save them and everybody else a lot in fees.