No , I think u r wrong , I am Zee 5 user since last 3 months
I feel now Zee 5 is very User friendly like Hotstar , They recently launched many updates which is more convenient to use.
I don't know about Premium episodes whether it is available before on TV but Now Zee 5 has improved alot
Considering the budget of the Shows like Survivor , Zee never upload it on OTT before TV telecast
If they did early update before TV , it will hugely affect ratings of the show