yeah, my bro doesn't, AFAIK, buy from russia direct. but even if you buy from UK suppliers, you are still indirectly supporting the russian economy. i haven't brought this up with him - we have enough disagreements about politics as it is.
Even in Russia, it's mostly a cottage industry, they aren't shipping thousand's monthly and definitely are not funding a war machine from that small investment, it also costs them raw resources when they do eventually manufacture. War has a way of getting funding much greater than from it's exports.