I'm a little confused, because this looks like you're just swapping one proprietary service (Google) for another (NoLongerEvil). Despite their name, we have no idea if NoLongerEvil is evil or not. Why should I trust them? I don't know them at all. Why will they be immune to the regular economic pressures surrounding any connected online service? What will stop them from adding tracking or other anti-features? Even if…
Google has left these devices essentially completely unusable. You're not trading up Google because Google already abandoned these devices by shutting off the lights. Even if you don't agree with how robust their service is, they're offering you the ability to turn what's effectively e-waste into an operable device.