This kind of catastrophizing doesn't contribute. For one thing, you jumped from "this kind of person" to "these kind of people", without supporting evidence.
Do you have a process which can identify, in advance, everyone who is going to be an asshole to a former intern? While picking enough winners to make bank? Please share!
Oh, if I had two wishes from a genie, first would be world peace, second would be being a native English speaker.
"these kind of people" is ungrammatical ("kind" is singular, "these" and "people" are plural).
Maybe in this case English isn't as hard as you thought. :)
Not much of a jump: "kind" at the very least strongly implies the plural already. If you mean just one person, you say "this person", whereas "this kind of person" means "this person and others like him". AFAICS "this kind of person" and "these kind of people" are pretty much synonyms; the only difference between them is that the former is grammatically correct.