Well I'm glad this isn't just me it's happening to and seems to be a system-wide problem with hotmail/outlook.
I don't really have anything new or helpful to add to the plethora of complaints thus far. I didn't change anything. I have had this email over 20 years, and as of the morning of February 20th, 2023 all of my emails that would normally go to my junk folder appear in my inbox. There doesn't seem to be anything I can do to fix or prevent this. I've looked into "rules" and settings and changed my password, all to no avail.
Can't seem to get in touch with any customer service either, but hopefully those who've said they were told the problem would be fixed soon are right.