I see it a lot on Twitter for instance where you can compare the complaints about toxic behaviour to the actual threads of conversation and interactions in the past which they are alluding to as toxic behaviours. (A typical one being software developers).
I will absolutely stand by that figure of about 90% - there are people who are subject to abuse and comments like hope they die of cancer and so on but far far more often it is thin skinned or people existing in a bubble who can not distinguish, or don't want to distinguish, between criticism/opinions and people actually being hateful.
I think it is equally very harmful to allow differences of opinion and so on to be silenced by branding them as toxicity.
EDIT: One thing I will say there is that might be more relevant to the environments I experience than necessarily a representation of the whole - but, unfortunately, I stand by what I say that far far more often than not people are using "toxicity" as a weapon rather than actually being on the receiving end of real toxicity.