Comic book fans do not like change. At all. This is why the comics have been repeating themselves since the mid-1970s until now. No one is willing to accept any sort of change, but they seem a little more open to changes when it comes to the movies. Cinema Blend got a hold of the director's commentary for Guardians of the Galaxy Vol. 2, and director/writer James Gunn shared that some fans were angry about changes to a particular character.
"Yondu became a space pirate, and not a sort of Native American-inspired spiritual warrior that he is in the comics, but people very rarely get upset about any of that. It seemed like the one thing that people got upset about was Yondu's small fin. They somehow thought it was important that Yondu had a big fin. I don't understand what comics fans get upset about over something else they don't get upset about. That something so physical and small would be the thing they'd get upset about, but they did — and in a nod to the fans, who I'm appreciative towards, we gave them the big fin."
There were a lot of changes to characters in Guardians of the Galaxy, but of all the changes it seems hard to believe that the changes to Yondu were the ones people got mad about. On a personal level, I know a lot of comic fans, and I cannot recall a single one that was mad about Yondu in the movie. It was cool that they decided to give him his big fin as a nod to the fans, but the movie seemed a bit too proud of itself for that reference. While the scene with Groot getting the wrong objects is funny, it does go on a bit too long. The fact that it's mostly there as a fan placating moment makes it feel even cheaper.
Guardians of the Galaxy Vol. 2 will be released digitally in HD, 4K Ultra HD, and Disney Movies Anywhere now and physically on 4K Ultra HD, Blu-ray, and DVD August 22nd.