What is up with Post-Covid Hospital Rules going back to how it used to be in Miami in the 60s?

So before we hispanics came here, Miami hospitals all followed the same rules as all states that immediate emergency family were to leave by a certain time. Yet, we all know battles ensued. I have been going to hospitals all my life (my mother's broken arm after a car crash), my grandmother's surgery, my mother's kidney issues, etc. And I was always able to stay with them in the rooms.

Well, since Covid they have gone back to their old ways. I tried to push today to stay in the hospital with my mother that's not fully conscious and here they were, still pushing me to leave. And I was the only one there (my partner had gone to do the household stuff).

I try to stay because I know mistakes can happen during transition periods, and I have previously caught missed medication or different medications in the past. What is giving as of recently? I understood it during Covid when my mom had pneumonia, but every hospital visit since then has gone back to the original way.