Except they are and they do. The quoted "air safety expert" in the BBC article essentially says the landing was "as good as can be" and that most or all of the people onboard would have survived if the localizer berm wasn't present.
Are you this "air safety expert" is part of the investigation team? Because otherwise, I don't think the actual investigators care about their opinion, or yours, or that of any media (mainstream or not)...
The full quote you're referencing but truncating is "as good as a flapless/gearless touchdown could be." This is, uh, light praise? "It's a pretty great shit sandwich."
None of these people are calling for not investigating the other factors.