It’s possible, but not confirmed.
Gaijin already took action, I rarely see Sukhois at top BR ground. 16 v 16 matches with barely any CAS if at all.
35% better in KE and 25% better in CE, going off of the only explicit numbers given anywhere (in the BRL report).
What was the action they took? Raising the SP cost was negligible. See them all the time in GRB.