We recently upgraded to pymongo 4.3.3 and tooling metrics depends on 4.3.3 to leverage the new timeout feature. I don't think it's worth the effort to upgrade v6.0 and v6.2 to 4.3.3 or make mongo-tooling-metrics compatible with older pymongo. Since these are released branches, there will likely continue to be less development and we won't get a lot of data anyways.