Has it really been so long people have forgotten how Kha'Zix works? (QQ Rant ahead)

So often I find myself getting flamed by the team based on how I choose to act in fights with Kha'Zix. "Kha why didn't you help?" "Why didn't u go in omfg noob." I just can't help but think people have completely forgotten the biggest part of Kha'Zix is his isolation. Sure you may see me burst down a target when they're isolated, but when I don't even have an evolved E yet, team fights are the last thing you want to see Kha'Zix in. Not to mention Kha'Zix is based hugely on his allies working around him. If you want me to gank or help in a fight at least place wards around the area. So often someone coming I've been about to perform a finishing a Q when OOPS the enemy brought a friend and my Q does almost no damage. I try my best to aid with vision as well. I upgrade my trinket, I usually take early scuttle crabs to help with sustain and vision for the team. Next, please stop harassing me and certainly other Kha'Zix players because we didn't go in when the situation turned bad really fast. Almost everything stomps out Kha's isolation. I'm almost surprised they haven't made monsters and brush hinder it as well at this point. Minions, turrets, and other allies affect his isolation. This also includes any pets such as tibbers, clones, heimer turrets, etc. I'm sorry if the Heimer is pushing your turret, but there is almost no way I can successfully gank him when he's surrounded by his minions and three turrets without giving up a kill.

tl;dr Stop harassing me because Kha'Zix's damage doesn't work against more than two enemies. This includes a slightly salty rant.