Again, Murray and Hogberg are not "bad", they are just "there", as symptoms of the team in front of them. Yes they gave up a few bad goals but all goalies do. You would put like 90% of NHL goalies and you'd have the same results, slightly better or slightly worse.
For Murray (and the Sens), everything was fine until that late 2nd period Jets PP in game #3. Matt Murray had a 0.910 SV%, Sens were 1-1 against the Leafs, leading 3-1 vs the Jets but then everything fell apart. Vets and their stupid penalties, the way that DJ Smith wanted to defend that lead, then his player usage in OT, the comments after the game, etc. That's when the train went completely off the tracks.
But agreed the contract is risky and premature (which summarizes Dorion in a vacuum). I don't know why, I thought the AAV was 5.25 until like Christmas, maybe because that's the maximum it should have been, and why not 2 years? Murray gets the time to re-prove himself and then get a better contract. Dorion prematurely wanted to save money, and it backfired (so far). Murray won't be able to do miracles. That's literally what is needed in front tof this team at the moment. BUT, it's very early, a lot can change during Murray's 4 years