I suspect those who didn't were mostly the ones with deeper insight of the underlying technology. When the fork occurred full blocks had already been a problem for well over a year. Segwit was not the solution and overcomplicated the blockchain. This is not debatable anymore. Bitcoin Cash abolished this "overengineering" and simply increased the block size. Disabled RBF making 0-confirmations a thing again. And lastly just recently fixed the DAA. Many think that Bitcoin Cash is closer to the original whitepaper by Satoshi. I'd argue that is true.
Currently the Bitcoin has had 100k+ unconfirmed transactions for weeks... and a ever growing mempool. You cannot transact or move your coins confidently without paying large fees. 500 satoshis/byte or about 30 dollars. The original vision is completely destroyed. Sentences like "store of value" are now the term used to describe Bitcoin. Very far from what the Bitcoin used to be. https://bitcoin.org/en/ is little more but a lie now.
I know this is not a valid reason to say that increasing the block size is the only solution. Of course there are other solutions. One is segwit... but that has not solved anything at all. The thing is that increasing the block size would fix Bitcoin's problem right now. Compare segwit implementation with increasing the block size. Segwit is a very complex implementation and frankly I would call it over-engineered. Worst. It hasn't done ANYTHING for Bitcoin. Currently the Bitcoin has had 100k+ unconfirmed transactions for weeks... and a ever growing mempool. You cannot transact or move your coins confidently without paying large fees. 500 satoshis/byte or about 30 dollars. The original vision is completely destroyed. Sentences like "store of value" are now the term used to describe Bitcoin. Very far from what the Bitcoin used to be.
To me it seems much more likely that another, unrelated cryptocurrency will eventually fulfill the role BTC was originally intended for.