As a Tahm player it is a dozen times more rewarding to save an ally and make a great play then to troll. Yeah you can, but it gets old. Fast. Novelty wears off. The reward and exhileration is tenfold when you make a positive play, because not only are you playing the only champ that can LITERALLY use magic god fingers to pick up an ally and put them some where safe, you are also capable of merging together Bard's Magical Journey with Rek'Sai's Void Rush in a Fusion HA style ally teleport. This lets you collapse on dragon , baron, or just simple team fights, as well as helping you and an ally flank the enemy or escaping from deep inside the enemy jungle.
A fantasy that as a support I've had for so long. ADC's yelling at you for not saving them when you complain about their bad positioning and say It's not like I can stop you from engaging and comitting to bad fights Well with tahm you can. And it's not just Tahm's ability to play Babysitter and pick up your adc like a kitten in a mother's mouth and ferry them back to a safe spot and tell them to play nice. You also are given the ability to , with 3 Stacks of flavorin, devour an enemy that would have otherwise either A) Unloaded tons of DPS B) Assassinated an ally or C) Deny enemy jungle the ability to smite an objective.
You will still get a troll but once people realize you can exit early from Tahm they will get bored trolling. Because if Tahm eats you and runs into the enemy to spit you out, if you end up jumping out early behind him HE IS THE ONE stuck with the enemy and with no ADC for them to target they'll collapse on him. Let the Tahm trolls trolls, they are a lonely bunch and will be forgotten soon.