>>22399102>Yes they fucking do.No they don't.
Poison's only problem is that there aren't enough good poison pokemon. The type itself is fine, at the very least from a defensive standpoint.
>Weak to Ground, bummer>only other weakness is Psychic which exclusively used as STABAnd then you have Fairy and Fighting resists, which is very important. Sure, the other few resistances aren't so major, but that doesn't mean it's a bad defensive typing; it's just one that works best with a secondary typing, like grass (see how good Mega Venusaur, Chesnaught, Celebi, and Ferrothorn are.)
The problem really is that they've barely tried any Poison type combos and they kept using the same ones, and just aren't making many of them. We have five FE Poison/Grass Pokemon and five FE Poison/Bug pokemon. Half of all Poison types were made in gen I. There is no legendary Poison type (you are not clever if you say Arceus.) We got ONE FE Poison type in Gen 6.
And furthermore, there are so many that are almost good, but aren't. See Dragalge and Toxicroak, they have everything they could ask for except stats, leaving them just sort of niche. This is a problem for nearly every type, but when they introduce new and interesting Poison type combos, and then give them meh stats/ability/movepool, it just stings
TL;DR Poison type is fine there's just not enough good pokemon to make use of it.