Does this mean the rules have changed or that there's one rule for regular people and one for celebrities?
No. It's always been the case that some hospitals and some wards allow visitors for end of life cases.
My family are in no way celebrities. We've had 3 family members die in the past year - April, May and August. All three had family visits when it came to their end of life care. All in state run hospitals, not private.
The earliest was FIL in March/April. No hospital visitors but the hospital had him moved to a hospice for his final 2 days so that mil, dh and bil could be with him.
Both nanas died in hospital, one with covid and one without. May and August. Both has family visits in the hours before their death.