IP block it. Boom there goes eSNI and DNS.
Sure, it’s crude, but again: it doesn’t have to perfect, it just needs to create havoc with Google services to push away a regular user, who has no idea what DNS even is.
A better approach though is to fine Google, with a % of revenue increasing until compliance. They’ll very quickly be incentivised to comply or shutdown.
Trying to machine parts for a gun with “a bit of electrical know how” sounds like suicide by stupidity to me. Especially if you’re going to DIY the ammo as well…