It's not just "third party", it's "any third party". You seem convinced that this is only the person who received the binary, but what do you base this on? I don't see anything in the GPL license to support that idea.
If you look at question 6 of the GPL quiz, it even says "everyone".
b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or,
Looks like the option you (and me) want is ManualAppUpdateOnly which disables automatic updates and nagging, but still allows you to update manually.
Don't delude yourself with clever words like "Google malware". A smartphone needs more than just an OS or you may as well go and buy a old Nokia 3310. Finding a list of apps that makes a phone smart rather than just being a big screen which can make calls, play music and show you an internet page which *doesn't* collect your data is nearly impossible.
While that is ostensibly true, that does not mean that opengapps is the only way to get there. You could install microG like
I went through the trouble of installing LineageOS, and used Google's apps. Why wouldn't I? The benefit of Lineage isn't some anti google bullshit, it's to get Android free from Samsung, or LG, or whoever made your phone's fuckery.
I installed LineageOS explicitly to be delivered from Google.
At least, that's the path for me in LineageOS (which is based on AOSP).
I don't yet know how to install it to act as 3 different browsers so that I can keep the kinds of work I do separate.
If it's based on Firefox, something like palemoon -noremote -profilemanager could do it. Alternatively, try about:profiles.
"Buy land. They've stopped making it." -- Mark Twain