That is true, and its not uncommon in sports not just hockey to rest your starters in a mean nothing game prior to the playoffs. Happens all the time when outcomes are predetermined prior. .
However benching your best players in a game that determines your precise opponent in a direct matchup is not standard operating practice.
Winning brings on the stronger and defending Champs and losing increases your odds of drawing an easier and better matchup.
Our Leafs haven't won a playoff round in 18 years, so I'm okay with potentially losing\throwing this game by benching key players, with the end justifying the means of increasing the odds of ending that streak. I know lt might come across as self serving my own best interest, but I just want our Leafs to finally win a playoff series again. Not risking key injuries in the process only benefits the interest further but the actual opponent still the higher priority.
Being afraid to play players for fear of potential injury risk is a passive not aggressive way to approach getting ready for the playoffs. IMO