I would bet this causes more harm to innocent people than frustration to the Russian regime.
Why not do something more targeted? E.g. take down domains that are related to the government, propaganda, etc.
As can be seen in the HN community, Russian tech workers are the likely the least influenced by propaganda and do support Ukraine. With this service termination however, they're most impacted.
At the very least, please give people an extension. March 31? Innocent Russians are going through a lot right now.