That was also a huge issue when Back to the Future came out. There was of course no consensus.
TTG at least clarified that even though their stories might not be "canon" from the viewpoint of the original creators, they work hard to deliver a story that is so much in the spirit of the franchise that it could be considered canon
. Apart from that, I suspect that Telltale will always refrain from suggesting that this could be "official" canon, as the original creators must not feel pressured to make a (positive or negative) statement on the matter.
Still, "canon" is always sketchy when it comes to interactive media. Jurassic Park might not be the game where you have many choices to make, but still events may play out slightly differently, and you'd have to determine which version of events is the canon version and which is not. Did Nima survive? Was she able to talk her way into the park or was it necessary for her to slap the guard unconscious?
And so on.
All this makes things very complicated. Maybe it's best to fall back to that "expanded universe" idea TTG was talking about in the very early days of the BTTF announcement.