We can applaud the Russians for attempting to determine Earth depth. Like others when performing projects under the guise of working within the science community, they feel it necessary to not mention the connection with flat Earth research.
The round Earth community has resources to prove a flat Earth but such efforts remain behind a cloak of misdirection for fear of loss of funding or loss of employment. An example of the latter, are geologists that know the Earth is flat but do not come forward fearing loss of their paycheck.
As FET becomes more mainstream, we will benefit from results of increasing Earth shape research.