I dont think there are more BS this year. What you need to consider is that Feb/March is the worst month as you have all the new BS (who got status in 2025) and those who did not make it but still have BS until end of March.

furthermore, all BS now dumping their coupons as they get reset end of March. Plus MIA is a heavy family destination so perfect for a BS upgrading all the family. In fact in the bidding list you can check at what time each submitted the upgrade request so easy to know who is a BS and who are families. Last week MIA-SCL a BS had the entire family upgraded (5 out of 5 seats). Lastly, February is holiday season in south America so a MIA trip is even more likely to be with family.

regarding BS loophole, what do you mean?