We don’t know one way or the other. It would be nice to know if it was indeed a plant doing this.
As well, the same could be said by liberals in other past situations.
In the end, what you are saying leads to conspiracy theories, and we don’t want this to devolve into a conspiracy theory that it was a plant spitting on him, as I wouldn’t want liberals playing that game, either.
I will continue to question what I see in the news regardless of whether or not it leads to “conspiracy theories”.