What is up is vaccinations. Herd immunity is being predicted for sometime between June and Nov at the current rate of vaccination, and if that continues to increase, the point where we hit herd immunity will be sooner.
Magic Mountain made an announcement that they have no ability to guarantee. LA County has been diligent in keeping a higher degree of restrictions than even the state has recommended. Unless there is a dramatic change in infection rates, vaccination rates, or hospital capacity, it's pretty likely LA County (not Newsom) would keep Six Flags closed. If I recall correctly, LA County even refused to grant permissions to Universal's proposed reopening last June.
Six Flags knows' that it's dependent on the government allowing them to reopen, but they made the announcement anyway because words are cheap.
Yeah the SFMM announcement basically sounds like a cross your fingers scenario. I think all the theme parks are just hoping things turn around in the next few months with the vaccinations and less hospitalizations and both local and state will ease restrictions. Things are looking better but we are still far from out of the woods yet. So I wouldn't be buying any tickets for opening day yet or anything but we'll see.