Would this be considered griefing?

So Yasuo and Tahm Kench hadn't really been getting along all game (nobody on that team was lol). When Yasuo was doing red, Tahm walks up to him, eats him, and just stands there. Doesn't steal red or anything, hes pretty much just stands there tanking red buff while Yasuo was eaten(this was before the patience bar too, so the camp didn't reset). After Yasuo gets spit out, he yells about how Tahm was griefing in all chat and that he should be reported. Tahm responds by saying that he wasnt griefing because he didnt steal red or get Yasuo killed, and that their were no enemies nearby when he did it. I dont remember Tahm doing anything else that would be considered griefing or trolling. So what do you guys think?