Whenever, an eavesdropping scandal erupts in Ukraine, an axiom is revealed. The Ukrainian elite uses Russian when in private, and hence the employment of Ukrainian in public is hypocritical and goes against nature.
Efforts to promote Ukrainian at the expense of Russian are really aimed at harassing the lower class idiots. The children of Ukrainian elite speak Russian and get their education in West European languages.
And therefore I think that any attempts to elevate the Ukrainian language are futile, and they will lead to further fragmentation and destabilisation of the Ukrainian society.