Can English people fly to Russia now? Is it problematic?
The only problem is the flight with a layover. There are no other issues. This is often asked about here. And those who have visited provide answers. Look through the chat.
They can arrive by flight, just like everyone else. The security check at the airport can sometimes take longer than usual.
In what way is it problematic? I only had to buy a ticket Turkey - Russia - Turkey, because there was a problem with payment on the S7 and Aeroflot websites. Other than that, everything was fine, both to Russia and from Russia.
If you have a visa and are ready to endure the hardships of flights with layovers, why not.
Another question is why they would go there now without pressing necessity, but you didn't ask about that ;-)
The same. We flew in a month ago, all was fine (except for a bunch of layovers, of course))