Exactly, if one doesn't believe in the dogma or doctrine, then choosing between Catholic vs Anglican is kind of pointless. 

Which I actually believe is the Anglican position, they don't see any difference between Christian "bodies" and believes in a branch theory where all branches are valid.

So the question is why would one be Catholic if one believes in the Anglican position when it comes to... well belief?

Their protest seems kind of silly, wouldn't it be easier to be Anglican rather than forcing others to believe or not believe the same thing as you?