Wet food causes dental issues but isn't a problem with regular checkups unless your vet prescribes dry food to a cat especially prone to dental issues caused by wet food.
Dry food is tied to obesity due to being higher in carbs, and obesity -> higher chance of diabetes.
As for nutrition - high end dry food will always be better than cheap wet food but overall, from what I've gathered from many vets, is that wet food is better.
So I can see the argument for "wet food is taking better care of your cat" but, unless you notice your cat getting overweight, I don't think kibble could be considered harmful.
Some studies cite that, although with small sample sizes (making the difference between 11% and 39% only a factor of 8-12 cats).
The often cited danger is urinary obstructions and studies like [0] that show wet canned food treats the condition. Another study [1] show it happens less frequently with cats who eat wet food as opposed to dry food. So many people make the conclusion that wet food prevents and treats a potentially fatal condition, therefore wet > dry.
I don't find either study entirely convincing, most vets and studies don't seem to cite dry food as the inherent problem, but rather free-eating cats, overweight, and indoor-only (lack of exercise specifically). (No citations this time, sorry. I don't keep all this stuff handy!)
When the studies themselves aren't blaming dry food (entirely) and vets don't seem to overwhelmingly condemn the use of kibble, I don't see reason to do so myself. I trust the studies and vets.
Dry food is tied to obesity due to being higher in carbs, and obesity -> higher chance of diabetes.
As for nutrition - high end dry food will always be better than cheap wet food but overall, from what I've gathered from many vets, is that wet food is better.
So I can see the argument for "wet food is taking better care of your cat" but, unless you notice your cat getting overweight, I don't think kibble could be considered harmful.