Not at all. In fact, this is probably one of the most standalone ones yet.
The only thing you’d get out of it by having played previous games is recognition of recurring names and enemies. All of the Eikons in 16 are recurring summons from earlier games. Enemies make appearances from other games (and a lot of them are just straight-up asset flips from 14). A couple characters like Cid and Mid are recurring names as well.
To be perfectly honest you’d probably get more out of having watched Game of Thrones than having played a prior FF game.