@Felthry They added ruined portals in 1.16 (The Nether update), that spawn randomly with netherite etc. and people assumed it was just referring to Piglins trying to come to the overworld (1.16 renamed pigmen to piglins and added non-zombie versions)
And this year they announced Minecraft Legends which is literally about Piglins invading the Overworld so not it's possibly a "slow burn worldbuild" thing lol
@Felthry 1.18 completely overhauled worldgen so that's an understatement X3c