who already hate Trump feel good about hating Trump. There was basically no logical argument contained within that argument that indicated that voting for a third party was stupid.

In general, you can tell a "voting 3rd party = stupid" argument is bad if:

1) It makes no mention of the electoral college
2) It makes no mention that the statistical likelihood of a person casting the deciding vote in an election is only slightly less than winning a billion dollar powerball jackpot

I'm fairly certain that it's impossible to make an argument that 3rd party votes are a waste without addressing those two points, but I guess anything is possible. That article you posted was just some Hillary supporter getting mad that he is jumping off a bridge and not as many people are jumping off with him as he expected.