An option strategy packaged as an ETF isn't necessarily a bad thing, not everyone trades options themselves.
The fees are published, and a fee for doing something that you can't do yourself isn't unreasonable (depending on the size of the fee).
But if you can't do it yourself, then how do you understand what they are doing and make an informed investment? Conceivably the right strategy implemented within an ETF at a reasonable fee could be something an old options hand might want to use when they decide to get less active. But that's not the market these funds are targeting.

On a brighter note, the idea of an ETF 'wrapper' for an options strategy has some appeal apart from less work for you. You're not rolling options forward at expiration yourself (taxable), they are doing it within the ETF so you're seeing "unrealized" (untaxed) gains of the ETF (...I think).

from personally not finding a buffer strategy appealing, my concern is that (from the funds I've looked at) that the option strategies are implemented in the ETF using FLEX options.