It comes without Google Play Services per default, but those are not the only services connecting to Google.
Like others say, it depends on how private you want to be. But it is fact that Lineage doesn't put in any outstanding effort to degoogle the system at its core. If that's what you want, while not sacrificing the compability of Lineage, DivestOS might interest you.
The one article I always refer to is exclusively in german, so if someone has a comparably extensive article in English, let me know
https://www.kuketz-blog.de/lineageos-weder-sicher-noch-datenschutzfreundlich-custom-roms-teil4/
To be fair here, this article looks at Lineage at its default state, and the preinstalled browser for example is not looking too hot. But since I'd reccommend you use Mull anyway, I wouldn't deduct too many points there.