That does not sound like trash to me. I can see how those issues with Google connections are problematic for some users, but as the article acknowledges, lineage is primarily targeting people who want to update their old devices. Sounds like degoogling is best done with a different rom is all.
ADB and Fastboot both run natively on Linux. I don’t think I’ve needed other tools since the HP Touchpad days. And that didn’t come with Android in the first place.