Blind should either not be QSS-able, or it should break The Culling
Blind are considered CC(disable) as they inhibit your ability to use basic attacks, and thus are QSS-able, which is fine.
However, The Culling is interrupted by cc effects that inhibit your ability to use basic attacks - thus it will continue through silence, but not through entangle, unlike a channel - and it's not interrupted by blind. If blinds are considered as not inhibiting your ability to use basic attacks - only as making it deal 0 damage - they are a debuff, as blinded champion is still "free to do anything they wish" and should not be removed by Quicksilver.
Similarly, several abilities tied to basic attacks will still proc through blind - rolling thunder and devastating charge - what is not only inconsistent with blinds being QSS-able (since it means basic attacks ARE being proced after all), but also with behavior of other abilities like ruthless predator and shield of daybreak.
Personally I think blind is indeed a crowd control effect, and those 3 inconsistent abilities should be fixed to interact with blind the same way the rest of the game does.