You're not entirely wrong, but it's a very common radio technology, which anyone is free to use (even implement from scratch, with enough skills) with very few restrictions (which don't really affect state actors).
You may as well ban screws, lenses, explosives, radio, rubber, chocolate and internal combustion engines with this line of reasoning. What will it achieve? Russia won't stop using them.
Well, some Russian car factory stopped because they couldn't get screws. Also, they couldn't make their own screws, because the screw-making machine had wear parts which they couldn't get.
Of course they won't stop using these common components altogether, but the idea is to increase the cost of waging war.
You may as well ban screws, lenses, explosives, radio, rubber, chocolate and internal combustion engines with this line of reasoning. What will it achieve? Russia won't stop using them.