The problem is not the size of the block, but the organization of the block.
For example, always having 25% of the block reserved for transactions older than 72 hours, regardless of the fee, would make much more sense. This would allow all transactions to flow through the network, preventing them from being held on hold for weeks. At the same time, those who want to move to the front of the queue can pay more fees.
This will only work for the occasional temporary increase in mempool size, which of course is fine too. But if the mempool grows systematically, anyway, sooner or later the 25% quota for old transactions will overflow, and they will also have to be ranked somehow additionally, because some transactions will start to overdue.
But it looks good as a temporary solution, because it will reduce commissions for non-urgent payments.