Generally my stance with these forks born from community drama is "wait and see." Sometimes the fork will gain traction and become the de facto "true" version (see Hudson -> Jenkins). Sometimes the fork will flop and people will largely stick to the original despite whatever caused the schism (see Terraform -> OpenTofu). Many of these recent forks are being done because people won't want AWS/GCP/Azure to slap a UI on…
I think it is too early to evaluate Terraform/OpenToFu. They're diverging now and it looks like OpenToFu are bringing on some wanted features.
Opentofu hasn't shipped a 1.7 stable with removed blocks yet, whilst terraform is already on 1.8 with provider functions