Quite possibly, yes. It definitely clouds his early usage.
there was a lot of chatter out of camp about how comfortable Jaron was, and early speculation that he’d be the WR2 (which happened) and that he was a very different receiver from Metcalf or Lockett or anyone else - that he’d provide the reliable underneath stuff on short / medium routes, and that wilson and he had chemistry.
So while not a direct challenge because they fulfill different roles, Brown likely keeps Metcalf off the field in 2 WR sets.
I don’t see Lockett coming off for Metcalf, well, ever, so yeah - not a great thing for Metcalf.