State competitions are often paying for space (hotels) and these are more available and don’t typically have the same COVID-related requirements. Many chapter competitions typically use donated spaces (schools, universities, company headquarters) that are either no longer being made available for “outside use” or are putting severely restrictive requirements on users. Why is this decision coming so early? Things could change by February. (An online event would keep this from happening.) Students are more likely to stay home from school when not feeling well. Students not feeling well the day of the competition are likely to still attend a competition since it is the only time it is offered.
MATHCOUNTS Chapter Competitions cannot have this same level of scrutiny or expectation of every adult volunteer/attendee at the event.
Schools are able to do contact tracing for any issues that arise.
Many schools that are operating in person are still not allowing “outside visitors” or even parents into the school buildings, so there are still limitations. Schools have resources to support in-person “gatherings” that volunteer coordinators likely do not have.