War changes language: More Ukrainian, less Russian
War changes language: More Ukrainian, less Russian

phys.org
War changes language: More Ukrainian, less Russian

War changes language: More Ukrainian, less Russian
War changes language: More Ukrainian, less Russian
Not very surprising. I'm sure the same happened with German during both World Wars.
Duolingo noticed a similar trend as well, with Ukrainian lessons spiking in popularity after the full scale invasion in February 2022.