ranty post beyond but first, the reason they probably lost is because of the 13/4 nasus and the malphite top. I don't even know what malphite's roll is in this meta because he certainly doesn't tank. he gets poked down extremely easy early and armor pen renders his high armor (the only thing he has) useless, though they didn't even need any that match with Vi as a jungler.
now compare the situation to a vi jungler coming to help bottom lane for free kills compared to a jungler having to sit in lane with an akali so she can get fed for no results. i'm guessing the teemo was mid and then thresh bottom with graves. thresh + graves combo = instant buckshot for stacking damage while akali can't even heal or shield and is helpless against 2 full health lane bullies who just one shot the carry
damage a fed akali does: one-shots anyone and then is forced to retreat without aid
damage a non-fed carry does: zippidy doo dah day
damage a fed tanky jungler would do to akali: too much
akali can support because of her W making it where she can get into auto range, but it's a stupid strategy because plenty of carrys and supports don't need to see you for more than an instant or not at all to poke you away from cover and a support that does nothing but poke damage isn't a support...gangplank is the closest example I can think of and teemo. both have very high damage pokes with differing effects. Gangplank can farm for free while in lane and heal the carry with relic shield and increase the carry's AD
teemo can blind the enemy adc but that's pretty much it
the downsides of these types of supports is that the carry has to be extremely careful and lose farm at times or else the opponent can all in and kill one or both players
people shouldn't troll in ranked, even if they are platinum