If you are a Russian national and you are marrying a Polish citizen then I would imagine it would be a simple formality to be able to obtain the rights to a Polish passport after a certain qualifying period. You can of course buy a Polish passport just like you can buy everything in Poland like a driving license. simply pay your money and wait a week or so and it should be ready.
I think you have a wrong idea. There may be criminals and some corrupted servants that sell Polish pasports buy each serious control will discover everything.
We have the same problem in Russia now. Many Russian passports were received despite legislature and now their owners have problems including those ethnic Russian repatriants who legally had right to citizenship.
Besides that there are some details in the question we didn't notice.
It is known that those who have Polish wives or husbands can receive Polish citizenship in some years. If they live all this time in Poland.
And the question is that in this situation the future Polish wife lives in UK and that married couple is going to continue living there.
So the question is: Will unPolish husband receive Polish citizenship if he as well as his wife aren't Polish citizens?
Alle the future children of this couple will become Poles without any doubt although they were born outside. And what about their father?
To Polish participants:
I don't know the motiyes of this question. But I think they may be quite honest and reasonable. Many problems can appear in the family if wife and husband have different status, have different right to work in EU states, to spend holidays if one depends upon visas and the other no.
For some years this can be taken easy. And for the rest of the life?
I think a serious man takes all this into account if he really wants to spend with his wife the rest of life.