I'm a jungle main and your both right an wrong, you should gank but some junglers just cant gank at first, they need to farm some to get to that point, Its not always about ganking i mean if i'm ww (never am) then im not gonna gank you pre 6, it be a complete waste of time, elise doe apply alot of pressure, thats because shes an early game ganker, a lot of other champs are late game menaces that gank if they can get a kill, however the whole "you flamed me im not coming back" attitude will cost you games considering that if you say that and that lane feeds when you just farmed and didn't help then that is actually your fault dont do the whole flame attitude, but also yeah never gank a fed lane unless you counter them or are equally fed it will just end up terribly.