I hear what you’re saying, but look to historically great attacks: MSN, BBC, our own Salah, Bobby and Mane (is there a universally accepted acronym for them?) - there was barely any rotation in those positions when you have 3 world-class forwards at their peak. With the likes of Wirtz and Isak, if it happens, we’re approaching this territory - these players are too unique and too valuable to rotate on a regular basis.
Now with Salah being over 30 and Isak’s injury issues, I agree you probably need a bit more cover than some of these other trios, but generally your star forwards should be expected to play every meaningful game and it’s simply too expensive to have someone of the same caliber on the bench, let alone 2 or 3 such players. Jota would have been perfect as an option to have in all 3 positions, but alas… we might have to keep Chiesa in this case because I just don’t see us replacing 4 attackers in one window.