I was at the HOPE conference 2025 conference a few weeks after IETF. Attendance was way down from the previous year which was sold out. US attendance was more or less flat, visitors from outside the US seriously down. After recent events in Georgia USA, things are much more likely to deteriorate than improve.
Moving to another venue is probably not practical at this point so the realistic choice is between meeting in SF and no meeting. I understand that the SF meeting is likely to have a serious attendance shortfall. But given the multiple prior cancellations and the fact that the alternative is likely no meeting, I think we just have to accept the fact attendance will be low.