That's fair, but I wouldn't say Grier regularly overpays. Grier turned Meier and an albatross in Karlsson (while only retaining 6M of 46M left) into Musty, Dickinson, Mukh, Zetterlund, and Granlund (maybe will get a 2nd or 3rd at the TDL this year?). Also, while he may have paid a premium for Askarov, he also just turned Hertl's negative value contract into a top-3 goaltening prospect in hockey and potential for a top end starter pending development. Burns was just a cap dump for a couple of 3rd round picks and doing a veteran on a terrible contract a solid.
I don't really put much weight into some overpayments in minor trades (3rd for Kunin, for example) because he also made some great minor trades to balance it out (getting a 2nd to take on Walman, for example). He's doing just fine imo.