Premiums were always going to increase. ACA wasn't changing the fundamental nature of for profit insurance, it increased the insured pool so premium increases were defrayed some by more people paying into the system. That's the idea of the "affordable" part.
Premiums for the average healthcare plan would be almost twice what they are currently without the ACA.
ACA didn't raise premiums in and of itself, it relatively is cheaper than the old system's projections. But people aren't paying those premiums, they're paying post-ACA premiums, so they conflate that with them rising. They don't really care that they're rising more slowly than they would without the ACA.
Find my post earlier in the thread. With all the plan changes I experienced, every movement was an opportunity to raise. Especially after being laid off. They were raised, I paid them. I have yet another new provider and plan in 2020. Please don't tell me what I did and didn't pay, thank you.