And that's why this show was 100% necessary. I don't think we could have just turned the page, Steve is old now (dead? They don’t seem to ever directly answer this), now Sam's Cap over the course of a movie. And it actually has nothing to do with him being a black man for me. To me, the Captain America mantle belongs to Steve Rodgers and Steve only, so anyone who took over was going to feel wrong. John felt wrong. Bucky would've maybe felt more like an obvious choice since they've been friends since WWII, but Sam has Steve's optimism about America and he's sort of that scrappy kid too, he just never got the serum. Bucky has killed god knows how many people, he could never take the mantle and he doesn't have the same optimism that both Steve and Sam have. He's missing certain qualities for the job, much like John was.On to the positives... the new costume is excellent, albeit, a bit goofy from the top. Sam needed development, and he got it. I didn't envision him as Cap as I did Bucky but the last episode (especially the speech to the senator) were very Captain America to me. John Walker was excellently done. I hope Sam gets better stories this time around, and really gets the opportunity to lead the MCU going forward.
We can criticize certain points of the show here and there, but the fact that they nailed Sam being a believable Cap is all that matters coming out of this show, imo. Now they can move on and I can actually call him Cap now and believe it when I say it, too.