wonder about the reason cause they posted last summer:
In the next steps, we will proceed to the rollout phase, where Hashi will become a mandatory validator, followed by the final phase, which involves decommissioning the legacy validator set to fully transition to Hashi’s enhanced security model.
Stay tuned for further updates as we move through the next phases!
so the main reason for deprecation is missing for me. Were there any technical or personal issues that makes it impossible to proceed as planed? But maybe this question is better addressed to @Cross-chain-Alliance