If I don't have to open up a work laptop to check an email or copy a couple of spreadsheet cells into a reply, and can spend more time with family, I wouldn't call that stupid. Many companies aren't in a position to hand out fully-managed company phones and will just shrug you off.

MDM may be as light as a single app with its own policies, or something as heavy as device configuration (for VPN, remote wipe, etc). Containerised app groups seem to be a good balance.

Sorry, allowing anyone (especially corp) the ability to remote wipe my personal device is an absolute non-starter. That is something that I will never EVER volunter to allow happen. If a company insists as condition of employement, then that is not someone that I will work for. If they are that asinine about this one policy, then who knows where else they are making insane decisions?