the original method seemed fine to me: after we reach a certain blockheight, increase the blocksize. repeat as needed.
but now there are large players (with powerful, years long propaganda campaigns) that benefit explicitly from constrained block space.
both XMR and BCH have excellent adjustable blocksize algorithms. I've always believed that there is nothing wrong with some linear scaling as long as that's not all you're gonna do and as long as a full node can still run on reasonably up to date consumer grade hardware. this would have bought plenty of time until someone could come up with a way to have a L2 that doesn't just end up shoving everyone into custodians. whatever "centralization" would occur from bigger L1 blocks is nothing compared to the number of people being shoved into custodians because of payment channel garbage right now.