Cyrillic has been indeed frequently used as a weapon, even if usually not by the Church, but by Tsars or by the Soviet state. Even the Eastern Christian Church, while it allowed various local alphabets, most of which were derived from the Greek alphabet, it was much less tolerant with the Latin alphabet or anything else that could be influenced by the Catholic Church, which was seen as a hostile competitor.

The Russians have forced most of the people they have subjugated (except for the 3 Baltic countries) to switch their writing system to Cyrillic, regardless whether they had previously used Latin, Arabic or other alphabets. This happened both during the time of the Russian Empire and of the Soviet Union.

This was very intentional, to make difficult for the younger people to read any books from before the Russian occupation, if they succeeded to find such books.

This was coupled to a system of education were people were taught in schools a falsified history, were the Russian invaders were presented as liberators and where it was claimed that everything good in science and technology had been discovered or invented by some unknown Russians instead of those about whom the Western "imperialists" say that they were the discoverers/inventors.