Nope. I seriously don't think so.
Ironman 2 was the third movie of the MCU, at that point, most people didn't even know they were even building a MCU at that time, just fans like us.
The MCU is still a new thing, Ironman 2 was still phase 1, the other two were the start of phase 2. if they were really that bad, they would have crippled the MCU so early in it's growth.
Outside of the boards? I don't know too many people who hate those movies like some fans do, and I know a lot of people, but then, that's just my experience.