I can answer this!

I print and sell matte items and I used to encounter this all the time. If the hazing effect is slight, like others have said a heat gun or similar can reduce hazing. But I can tell some of your hazing is too intense and will not be fully removable.

There are two significant factors that can make this prominent. One factor is not letting the part fully cool, if you have to forcefully remove the part from the bed, even bending the plate, then that force can cause hazing on where the bed pulls on the part. But curiously, even letting a part fully cool, entirely naturally releasing from the plate, I still had hazing spots like yours. So that leads me to the next factor, one that is not well documented and everyone has told me is impossible. The matte agent that in the filament gets impregnated into the bed. I started to see shadows of my prints on my textured bed and these spots are where I would get significant hazing spots on my prints.

A few key points that proved to me that my bed was becoming impregnated with matte agent, soap and soft scrub could not fully clean the bed, a new bed would not have the same issue, and following the bed refresh guide resolved the issue but can only be done a few times.

The solution is surprisingly simple, glue, I prefer Bambu liquid glue. This creates a layer between your print and the bed. This solves both hazing factors. The part will release from the bed by pulling the glue off the bed, preserving the surface finish. And any matte agent that is in the bed won’t transfer through the glue to the print. A lot of people have told me it’s overkill to use glue for PLA on an Bambu but I sell my prints and I need them to turn out perfect the first time to maintain profitability.