As I said:
Soviet fields ISU. You dont have Elefant? say gg wp
German fields Elefant. No problem, dont go T4/ISU.
Saying something twice doesn't make it valid.
Soviet T4 is the most certain way to lose the game when opponent goes Elephant. (it's like trying to fight SU85s with Stugs

)
Elephant was just as big a problem before this patch because it had no counters whatsoever. The only reason it seems like a bigger issue now is that ISU is better so Elephant is more necessary.
Prior to this patch maps like Rails and Metal and Minsk were unlosable as German if you had an Elephant on the field in 2v2.