Those were arguments that the anti-SegWit people used, but they're not true:
- SegWit's security doesn't depend on miners, but rather on the economy. (Otherwise the UASF attempt wouldn't have made any sense...)
Looks like i misunderstood, however what if all miners use non-SegWit nodes, others use SegWit nodes and there's transaction from/to Bech32 address? AFAIK this will make such transaction never confirmed/included by miners.
If all of the miners decided to run non-Segwit nodes, I'm sure that would hurt the market value of BTC, and hurt their bottom line. I am sure there will eventually be at least one pool that will relent and go back to verifying segwit transactions. Or someone in this space will create a new pool that does run a segwit node. Since that pool would be paying out slightly more due to the transaction fees, many miners would switch to that pool. Other pools would probably be swayed to abandon their little boycott and start mining segwit tx again.