It's not simply a 9 game stretch, and it's not simply "just a cold streak" when you're as legendarily bad as he's been. His SVP since Jan 1 is .887, that places him 2nd last among goalies who've played at least 14 games this season. (22 out of 23 - 23 being Nedejlkovic).
NHL Goalie Stats 2021-2022
These guys have his SVP as sub-900 from December 1st through Feb 27th, 29th among goalies with at =>14 GP.
FYI Bobrovsky's a .906 during this same period. Andersen's a .929.
This doesn't seem like an outlier.