You’re correct. That’s why I suggested having multiple cursors scrolling at the same time infinitely. Honestly the only issue will be that it might take you a few minutes to detect some of the low-tier streamers.
Also, once you have identified them you’ll be able to refresh their data every minute (or at whichever granularity you desire) until they go offline without any issues at all.
Yes, of course. How you utilize the data is a different story.