The rainbow defense is far from dead, BUT…
For those of us with the right heroes, it can make sense to run something other than a rainbow. This isn’t unique to Telly though. The Yurple set up has been used for quite some time now and has prove very successful.
It is easy to set up a successful defense that isn’t a rainbow with the right heroes, most players just dont have the depth to reasonably assemble such teams.
FWIW I have been running a rainbow forever and have zero problem gaining cups over night or when i log off as it is. But will be changing to Finley, GM, Telly, Vela, Kingston next week. I cant deny the meta and it is now a proven winning combo.