On the users tab, I can view all pages from 1 to 999. However, when the page number reaches 1000 or more, I get an "unusual number of requests" error:
I have reproduced this on two different devices, and another user I asked was able to reproduce the error. This is a recent error, as I was able to view the last page of users as recently as January 7th, '22 (based on a screenshot I took on that date).
/users?page=999&tab=newusers(which works) and/users?page=1000&tab=newusers(which shows the error message).