Why so many people complain about comic books they don't read?

[Reddish Mage]

Flip it.

A black man becoming Captain America.
A woman becoming Thor.

It's not "Oh, Captain, sir...the super serum had some...side effects" or Loki messing around convincing Odin to try to teach Thor humility a different way.

Isn't the wording in Marvel's announcement phrased in a way to get people to discuss, debate, criticize, and take outrage to the development in the franchise? What we actually have happened is that Falcon and a completely new character takes on the mantle and even the name of an old character. The fact that they did two at once and did it to members marvel called "the big three" suggests a highly premeditated attempt at publicity.

I don't read these comics and I don't have much of a reaction to the news aside from this. From what little I've read in comics made me feel they were far too thin and that the movies have much greater emotional depth and political significance then what I've looked at. From what I've seen, isn't Captain America and Thor better as characters then they are as titles?