The Telegraph also reported the Sea Eagles were battling to name a team as a "handful of would-be first timers knocked back a chance to play the game" because of similar reasons to the seven players who have stood down over the jersey.
Manly's match-day squad took a hit for a match that starts a vital stretch for the side, with two wingers on debut, a prop playing just his third game of the season and a bench utility playing for the first time since 2019.
Roosters coach Trent Robinson took aim at the boycott on Wednesday and said the league must be a place for all.
"It is great what the owners of Manly have decided to do and it is unfortunate that it has panned out this way because everyone is equal, no matter what race, gender, sexual preference, everyone is equal," Robinson said.
"Let people make their choice and let's not discriminate against those, and we are still doing that, and that is why it is unfortunate. We have got Gotcha4Life, that both teams [are supporting] … sponsors have given up their space for Gotcha4Life. We are really looking forward to representing, and talking about even just male suicide and the high rate that it is.
"But in the youth gay community it is five times the level of what normal society is, that is because they don't feel included. And for us in 2022 to not be inclusive and not say it is OK to be who you are is unacceptable
"We need to move towards a better place … I want to say that we are inclusive, we do accept you for who you are and we care about you, and we need to move forward in that way."