On August 10th 2023 it was agreed to deprecate Weave in rke 1.27 for different reasons:
1 - Weave has not released a new version since Jan 2021
2 - Weave is not supported in rke2/k3s, i.e. no migration path
3 - Apparently, no customer is really using weave CNI plugin

Chris Wayne and Will Godfrey agreed to this.