Yeah I could see the letter writing campaign as lobbying but to be fair, I can't see they have done anything hypocritical beyond that. They are counterclaiming on a point of law which already exists and requests that it is adhered to.
The actions of the Ministry of Justice possess the indicators of political repressions, from the point of view of Russian and international law. They violate articles 18, 9, and 6 of the Convention on Protection of Human Rights and Fundamental Liberties.