Fans are right to be upset and to even call for the league to investigate the Leafs to some degree, but this sort of thing happens around the league every year, whether it be the Tampa Bay Lightning, Montreal Canadiens, Vegas Golden Knights or other teams around the league.
Whatever the case may be, in this situation, not only did Toronto look at buying out Matt Murray, (but couldn't because he's not fit to play), but Murray came to the Leafs and said he couldn't play, which handcuffed them and made them use LTIR