The article does touch upon the main pain points of the A7 family: lack of native lens support and really bad battery life.
I find the battery life to be adequate. I did buy a spare but so far I've not needed to use it but maybe only using the EVF and turning the camera off when I'm not going to shoot for a few minutes helps. Also, note that the camera drains the battery even when it's turned off so I always take the battery out when putting the camera to bed for the night.
The lens situation is to be expected as it's such a new system however new ones do seem to be coming through now, both AF and MF, and most seem to be aimed at the higher end of the market. Which is nice.
Personally as a complete amateur I don't need lenses aiming to be amongst the very best new mass market lenses and I seem to be happy using my old Rokkor, Zuiko and FD's. I'll probably be tempted to get 28, 55 and 85mm AF lenses once they're out, and possibly a macro too.