Lampent and the monkey trio all required evolution stones in the main series - just like the stones needed for those new Sinnoh evolutions that were replaced by a single stone (though, for a few of them it replaced a move-based evolution).
Yeah I know how Pokemon works lol. I'm just saying it's a stupid way to implement the mechanic.
Plus the only reason the monkies need the stone is because Niantic didn't think ahead to create evolution items in Gen 1. Everything from RB just used candies in the first year of Go. When Niantic finally got their shit together and gave us evo items during the waves of Gen 2, they could've retconned the Fire Stone and others in, but decided not to. Now we're stuck with this shitty solution lol.
Plus there's Pokemon in Hoenn that evolved with a stone, but we never got a Hoenn stone. Like I said before, I'm just really surprised they brought the mechanic back considering how maligned it is.
Lol dont blame Niantic when theyve made such massive improvements to the game in just three years. ---
I love catching people in the act. That's why I whip open doors.