Is a relic worth it?

[Vahlnir]

If previous expansions were any indication, then when Endwalker releases, relics will almost instantly be outranked. Given that we are at the end of Shadowbringers, there won't be much more gear elevation.

If you want it for glamour, go for it. They aren't by any means difficult to get, just super grindy.

Relic weapons are usually good for 5-6 levels, so I wouldn't say that they are instantly outranked. They make for a good leveling weapons.