> Flash LineageOS and don't install any nonessential apps which includes no play services.

I did this with GrapheneOS and a simple launcher. That said, it's not something the average person will ever want to, or maybe even be capable to, do. They want to just pay someone money and get a product that respects them.

If this does that, then it will be well received by the people who care enough to spend money on it. I'll actually be buying one when it launches. My custom solution is "fine"... It's also a pain in my behind.

The entire point of a "dumb" phone like this is to reduce the amount of attention it requires from me. Managing some custom ROM and keeping it up to date actually requires MORE attention in some ways. I kind of hate it even after a year or two of constant tinkering to make it fit me "just right". I'd rather have something that respects me out of the box and spend a little time adapting to it.