Swayman is a borderline franchise goalie at this point, so I don't think it is relevant.
This year in the playoffs, Ullmark wasn't really given a chance to play. He had one bad game and Swayman didn't give up the net.
With that said, his NHL playoff numbers are not good, but they are also a very small sample size. His regular season numbers are all excellent, except he has never had to consistently play with a legitimate starter's workload.
So I can see how on paper, some people might be concerned. But on paper never tells the full story with goalies, and it's a position where you really need to know how to dissect and scout it - which I do not, and most people here likely do not either. (which isn't an insult, it's a very specific skill)