I think you greatly overestimate the success rate of players outside the 1st round. Very few players from 2019-now picked outside Round 1 have played played a full season yet.
2019 - 7 players out of 62 (2 drafted before Detroit even picked)
2020 - 5 out of 62
2021 - 1 out of 64
2022 - 0 out of 65
2023 - 0 out of 64
So 13 out of 317 players have played a full season so far. That’s 4%. If we drop 2022-2023 it’s 7%. Drop 2021 and it’s 9%. Teams just don’t “hit” on immediate impact players outside Round 1. These guys usually take years to develop before they establish a roster spot. Saying Yzerman is on the hot seat because of later round drafting would mean EVERY SINGLE GM should be on the hot seat for equally bad results if not finding immediate impact players outside Round 1. Your expectations are very unrealistic.
More important is to not miss on your 1st round picks, and so far Yzerman has done a good-to-great job there with Seider, Raymond, and Edvinsson all expected to have big roles on the team next year and Cossa, Danielson, Kasper, and ASP all meeting or exceeding expectations to date.
The real problem is that the drafting at the end of the Holland era was awful and left a team with little talent on the roster and a very weak pool of prospects. Holland’s last 4 drafts 1st rounders were Svechnikov, Cholowski, Rasmussen, Veleno, and Zadina. Svech, Cholo, Zadina are all out of the NHL or likely will be next season in Zadina’s case. Veleno and Rasmussen are depth players in the 3rd/4th line. That’s a lot of misses, 2 of them being top 10 picks. Yzerman started with nothing here. It wasn’t like Tampa where he had great young players/prospects (Hedman, Stamkos) or players (St. Louis) to build around or trade off. He had Larkin, Mantha, and Bertuzzi and that’s about it.