Just a couple days ago I cut a couple quad outlets into a wall, replacing single gang boxes. One of the outlets was a backstab only Leviton that was hot to the touch from feed through load which ended up being 9.9A...(which ended up being the Coke machine in the breakroom) The other outlet on the same circuit was an old "H&H DELUXE" (remember those?) and it wasn't warm at all... The H&H had screw down pressure plates.
Wagos & Backstab outlets have their place, but I personally am not a fan of a connector that I can't place my own "calibrated" torque meter on.. my hand.
