I don’t disagree with you.
I am big fan of drivechain. One of the reasons is because I think it will help increase non-custodial wallet adoption.
Lightning non-custodial adoption is slow mainly because of bad ux.
Discussion
That doesn't make sense.
If someone isn't custodying and using their own full node, it's generally better they not use Bitcoin at all
Who’s has custody of your bitcoin in drivechain?
The miners. This is why bcash is a bad idea, and why drivechains aren't an alternative to softforks.
Miners do not have custody.
Miners are profit seeking. If they start censoring sidechain transactions then guess what they lose out on business. And will be outcompeted by a btc miner who doesn’t censor sidechain transactions.
A Drivechain steal requires a coalition of miners to control 75% of the hashrate for 6 months.