True, as far as we have seen, Zirkzee and Hojlund have not been able to meet the expectations according to their prices. If Manchester United is ambitious to become a title challenger, then the management should recruit players who are sharper than the two strikers. However, who knows Zirkzee and Hojlund will develop better when handled by Ruben Amorim, maybe previously they had difficulty playing and understanding the strategy implemented by Ten Hag. I think, for this season Ruben Amorim will continue to rely on his two strikers. Manchester United style of play in the future will certainly change completely, adjusting to the wishes of the new coach. At Sporting CP, Ruben Amorim implemented an attacking style of play with a three-defender formation, and this will make the players in the front line more productive.
I support your opinion and this makes more sense. However Amorim is impossible to replace the two players this season and in my opinion, Amorim will still try to see how much the performance of the two players to be relied upon in each match.
If until the end of the second season the player does not make a big contribution, I am sure Amorim prefers to bring in the players he has been after and sells some players who do not have a positive impact on the team.