Does your new Hipad Pro get fixed for the reddish and blurry issues? And does your new Hipad Pro get unlocked?
From my experiences, updating system by flashing tool is better than by OTA update. I used to get my previous Android tablets permanently bricked by OTA updates.
I haven’t yet observed a reddish screen nor a stong blurry, a little bit blurry but not strongly blurry.
Hipad Pro seems to be unlocked as displayed on the picture:
Yours said DEVICE STATE - unlocked means your Hipad Pro is unlocked already.
So you can probably manipulate your system like flashing GSI ROMs on your device.
But if you are ok with the display now, there is no need for flashing GSI ROMs yet.