A number of my relatives are believers in "Smoleńsk assassination", and just over the last few days I've heard them asking questions like:
* so why did Tusk (the PM conflicted with President) even allow them to fly? (false)
* so why did they give away the investigation to Russians? (false)
* so why didn't Russia return the wreck? (true)
...all of which they perceive as evidence that the three official investigations were rigged, and the plane somehow magically flew itself into the ground.
No!
Russian Investigative Committee still says "investigation is still ongoing" as of 2020 😂
Of course, they are just playing Poles who love fight between themselves, and this topic is extremely incendiary in Poland, allowing everyone blame everyone else on "not getting the wreck back".
That's a whole separate story, but it has nothing to do with the original cause of the crash.
@kravietz Russia never handed back the wreckage?