Peter Dinklage has spoken out more often hating the beginning of his career because he was condemned to certain parts as he wasn't a known actor, and at a certain point it's then about: To eat or not to eat, that is the question.
There are plenty of actors, of all shapes and sizes who do jobs because principles do not buy you dinner or pay the rent.
But it takes people at the top to say 'hey, this isn't right'. Someone at the bottom doesn't have the same impact.
From Hattie McDaniel's wiki page (yes, I know, it's not the most reliable source), the first woman of colour to receive an Oscar:
As her fame grew, McDaniel faced growing criticism from some members of the black community. Groups such as the NAACP complained that Hollywood stereotypes not only restricted black actors to servant roles but often portrayed them as lazy, dim-witted, satisfied with lowly positions, or violent. In addition to addressing the studios, they called upon actors, and especially leading black actors, to pressure studios to offer more substantive roles and at least not pander to stereotypes. They also argued that these portrayals were unfair as well as inaccurate and that, coupled with segregation and other forms of discrimination, such stereotypes were making it difficult for all black people, not only actors, to overcome racism and succeed in the entertainment industry.
Like I said he was OK with it when it benefitted him. Now he wants to speak up against it when someone else needs "to eat or not eat". Maybe those actors at the bottom can decide for themselves whether they are OK with it so they can pay their bills. He can enjoy his fame and riches from all his past roles.
I wonder if he'll offer to pay for those actors meals?
He's a typical Hollywood hypocrite.
BTW his net worth looks to be $25 million. I wonder had he taken a stand for what was right when he was at the bottom just how much that would be?