Some people really hate GDPR. It has crushed the AdTech industry in Europe - I'm not sad about that but I do hope those people found other employment fast.
To a lesser extent, there are people that are concerned about "all the extra work" this entails, and the cost it adds to their bottom line. But this stuff is important nowadays. You really should be taking care of it.
There is some scaremongering about small firms being blown out of the water for noncompliance, but really, unless you're doing something you shouldn't be doing you should be fine. The terms of GDPR though still not completely clearly specified are flexible and reasonable. The main thing is now, that you can't say you weren't aware of it.