I'll generally support using gitlab over github on principle, but have found gitlab to be basically useless without javascript enabled while github still kind of works at least for read-only visiting of shared github URLs. Whenever someone shares a gitlab URL with me, it's very rare I can make any use of it without enabling js, it's quite annoying.
Of a simple page that works without JavaScript enabled is of interest to you, you might want to check out sourcehut.
Alas this isn't about my personal choice of git hosting, I already have my needs covered with a dedicated server.