Not only that, but the lore of Tactics doesn't DIRECTLY connect to FFXIV anyway.

Tactics, and XII, were very LOOSESLY incorporated into the Ivalice/Dalmasca stuff in FFXIV. But it's a new version of Ivalice. Not a sequel to Tactics/XII. It's a new worold, events play out differently.

It's similar to how the crystal tower raids are inspired by FF 3, but the stuff taken from FF3 is reworked into a new world, not a sequel or prequel to 3.

Playing tactics won't really do much for understanding FFXIV's lore better because while it does borrow things, it does a lot different and so you can't really assume that things in tactics apply to XIV anyway.