With first all of the park closings and reservation cancellations and now the re-openings and attendant reservations to deal with plus the number of employees either laid off or working from home, I don't find it at all surprising RA is slammed. As said, do as much as possible online and save a lot of hassle.
Just one example of how re-openings can hit RA hard, NY State park campground reservations were recently opened up for all of 2021 at once instead of the usual 9 month window that spreads things out.