They're not being very subtle about it
If you go to the "Rusia Today" website on any given day you'll find it full of opinion peoples peddling all sorts of weird and wonderful theories. None of these authors are Russian, they're all well known western journalists, albeit definitely somewhat fringe.
You could put this down to a Russian Disinformation Campaign but I tend to think there's a more prosaic explanations -- they've got so much space to fill and not that much budget to fill it so they're getting contributions from known contributors. The reason for this is twofold. The first is that you occasional get an opinion piece by someone like George Galloway who is definitely not into the right wing misinformation game. The second is that if you go to a site like offguardian.org, a blog site that was originally set up to counter the Guardian's "Comment if Free" censorship that crippled that paper's usefulness post Snowden, you'll find it full of the same sort of stuff these days. In fact its an invaluable resource for learning the latest Covid Conspiracy Theories.
(I keep telling people to read the book "A Man Called Intrepid". Its history -- WW2 history -- but you'll never look at today's media in the same light once you learn the tricks that were being used 80 years ago.)