Any text (picture) without a context; is (perhaps) a pretext.
Who, what, where, when, why and how; who is the picture of (customer, maintenance person, another pilot or crewmember, avionics salesman, executive with Sukhoi, Government or Business VIP)?
What are they doing when the picture was taken, taxiing for takeoff or ground testing some piece of equipment?
Where and when was the picture taken; prior to takeoff on the last flight or on the production ramp back "home" a year ago?
Why was this person on the flight deck? And the follow up question; was the person on the flight deck normal operations for such a flight and in compliance with company and governmental regulations? Just because the flight deck is almost completely off limits in some very uptight western nations, does not mean the rest of the world has to follow the same bad example when the local conditions are different.
There already was a third person in the cocpit - a potential customer. Reportedly he dont disturb the pilots, only from time to time he asked some question, about consumption of fuel etc. No wishes for risky maneuver or sightseeing. Hypothetical navigator shoul be a forth person in little cocpit.
How did this picture happen to be taken?
I do not think there is any problem with you or anybody else posting a picture, I would just caution that the rest of us might refrain from drawing any firm conclusions as to the circumstances leading up to the cause(s) of this accident from the really nice picutre posted just a few entries prior.