Not only Russian language and foods have plenty of borrowings from Central Asia due to centuries of trade, but immigrants from the region settle in all the major Russian cities and bring their cuisine with them, both as street food and as restaurants specializing in cuisine of those countries. Dishes with tandyr bread are made in street shops. Multiple varieties of lavash and other bakery from Central Asia can be found in any supermarket in Russia.

But you also mention ‘north Central Asia’ specifically, which as far as I can tell is Kazakhstan. Well, Kazakhs were nomad herders for centuries and ate mainly meat and milk, only starting with cereals around eighteenth century, and particularly late nineteenth century when they began settling down more.

Pray tell, what original bread was ‘culturally genocided’ in these circumstances.