I don't know about that. He's a fourth line NHLer that even average hockey fans wouldn't be able to recognize if they saw him walking down the street. Can't see many people changing their views based on his opinion, particularly when hockey players are stereo-typically viewed as the people of average intellect at best. Those that followed his posts further were likely to believe the same whether he said it or not.
We're not talking about Sid the Kid, Connor or even Matthews for that.
I think I’ll see what the Winnipeg Jets 4th line RW stance is on vaccines and just do whatever he thinks. He’s a public figure after all, so I should make decisions about my health based on his opinions.