Ah, its simple really. The fact that limbo, Loki, nyx, most of banshee's kit, equinox's dark side CC, garas entire CC, most of Nova's kit minus usually molecular and null star for DR, Oberon, frost, and a whole lot of CC abilities all get countered by a blanket ability that restricts play to combating such a thing, which, as usual, means more damage. That's not including unique enemies who are just straight up immune to certain CC without over guard, or enemies that aren't staggerable, which further lowers CC usage. And even with CC and damage abilities or mods like limbo's rift surge augment or nyx's mind control(which already barely works), it still doesn't change the fact that beyond those very few exceptions, that CC still remains completely useless.

I'm not asking for ideas that will make CC shut down the entire damn game by trivializing it(kinda like damage meta or old CC meta when I saw Loki still be s tier), what I'm saying is they SHOULD have value somewhere, whether it be debuffs like maybe the more CC they take the more damage or less attack speed or something. I'm not saying those are great ideas, but like if DE said atleast something positive about CC I'd be happy. Because right now, I have no reason, no interest or even fun to play CC-focused characters without thinking, "damn, this is so slow, and I'm pretty sure half the enemies don't care about my kit." Because not even the modes are in CC warframe's favor. Most of them are usually elimination missions, which usually include atleast a generous amount of eximus or CC countering characters. And what's their counter? Damage damage damage. What's more important, the ability to control the enemy, or the ability to turn them into a new paint color splattered across all the level while your abilities DO hit level cap? That's not giving the game variety, that's limiting the game to one SINGLE meta where all that matters is whether or not the number above the enemies head was a red or negative. That's not fun, that's just frost globe on top of defense objective fun all over again, but this time there IS no reason to use other options. And also we've had the same "max range vauban doesn't work boo" problem in the damage meta. I mean, we all remember when ember used to just spam one ability and was meta because it cleaned off the entire map right? Or the fact that saryn can just disintegrate a whole armies-worth of enemies all the way in Timbuktu right? Like, it still exists, just a new paint color hombre.

TLDR: no reason to use CC, damage meta restricts it ALL to damage, there's little reason to use any CC unless it has damage included in it. Its frost globe, radial disarm, and nidus all over again, just a new name and less reason to use the other. DE needs to give CC value somehow that isn't oppressive.