Fair enough, I would call it a cheese myself. However there's some Lost Sectors that can be farmed almost the same way because they can be done by just rushing through most of the enemies, kill the major and grab the tokens. it takes more time but is doable. Also they nerfed the amount of faction tokens rewarded by Public Events. I don't remember any cheesable way to farm PE's. On the other hand they greatly buffed fation tokens rewards in Nightfall and Strikes. Are they trying to force people to play in a fireteam? If so it's a dumb move.