IIRC GitHub, (BitBucket), and GitLab existed before this new (license-addendum?) Trademark policy; but may be wrong. Which is to say that I don't recall there having been such a trademark policy at the time. Isn't it actually the "Old BSD License" that retains the "may not spaketh the name" clause?
(Bitcoin is also originally a LF project; in Git, like BitTorrent, and similar to BitGold only in name, for a reason. Bitcoin initially lacked a Foundation to hold trademarks, in particular.)
The choosealicense.com table of licenses in the appendix is a service of GitHub, and GitLab also donates free CI build runner minutes for Open Source projects:
https://choosealicense.com/appendix/#trademark-use :
> Trademark use
> This license explicitly states that it does NOT grant trademark rights, even though licenses without such a statement probably do not grant any implicit trademark rights.
> IIRC GitHub, (BitBucket), and GitLab existed before this new (license-addendum?) Trademark policy
Trademarks are like copyright licenses where if you haven't been given explicit permission, then you don't have any. (The difference is that you can lose your trademark if you don't actively police misuse, but that's beside the point.)
Read the cited sources. They were grandfathered in.
(GitHub is a good example of why the policy exists. They borrowed liberally from Git's brand; conflated Git and github.com in the minds of tens of thousands of people, maybe even millions, registered a trademark for "GitHub"; and began going after people who do the very type of borrowing that GitHub themselves did. They ultimately ended up causing issues for the Git project when it sought a trademark, since the GitHub trademark already existed at that point.)