Some people are so narrow-minded.
This expansion released shitloads of content for mains, because that's what people are always complaining about on the forums, the obvious side effect is that you don't have much free time for alts. And there's content that requires long time investment which is obviously harder to do on multiple toons.
That said, this expansion also introduced increased VP for alts after the cap (I think it could be a little better implemented but still) and rep commendations. And the cape is not mandatory for all your alts, plus if you start now you get massively accelerated through the earlier stages. It's fun to progress the legendary again on your alt, personally I think it'd be lame if it was simply BoA. It takes a fraction of the time it took originally, so it's not so big a burden.
So yes alts are a bit harder to manage than in late DS/late ICC etc where you had shitloads of free time. I expect it'll become easier as SoO drags on though.