Trouble is, we shouldn't ever play five international teams in 29 days. This is what Rugby Australia are doing because they are so desperate for dollars. That means although we shouldn't do mass restings we have to; just so we can physically complete this ridiculous program.
And if we try to play the same team in all five tests, the team that finishes game 5 will be nothing like the team that started game 1. That is because body fatigue is a key precursor to soft tissue injury. Over-training has the same effect. Ring any bells with the 2022 season?
NZ does mass restings all the time, have done for years. They won't let their best players play full Super seasons either. I'd swap their last 10 years for ours in a heartbeat. And to rub salt into the wound NZ only play four tests this tour, one of which was Japan, and they have a full NZA team puttering around playing matches so they can pull players they want/need from there. They are light years in front of us on keeping players fresh and ready to play their best and additionally, light years in front of us on player welfare.
When ideology impacts reality, ideology never seems to win out.