1/ The next big boom seems quite obvious, but I think people are scarred from the years of "ETH killers" being a joke term.

ETH prices and gas are at a point where much of retail is priced out. Things like BSC are gaining a lot of traction.

2/ Chains that are EVM compatible are likely to have their day in the sun, and at some point this year (my guess is around April), smart contracting platforms on DOTs and ATOMs will start gaining steam

3/ I really have no comment on the ultimate winner, I'm a trader, not a value investor. But these ecosystems are real and people are going to use them for at least some amount of time.

4/ No reason to ignore them for ideological reasons, there is no inherent "goodness" to Ethereum that other platforms don't have, just longevity.

5/ Even the more centralized chains have their value, for example -- a strong centralized backer who is willing to go to lengths to improve the ecosystem. (Benevolent dictator and all...)

6/ Less inclined to promote that kind of chain, because I think it goes against the concept of decentralization, but I also can't ignore that centralized platforms have value, and can be undervalued