Scotty was a man pushing 80 on a ship with more than enough amenities to entertain him and plenty of things he can do to "catch up" on the seventy-five years of technological growth he has missed. But, no, he instead pesters the fuck out of Geordi and drinks all of the bartender's true whiskey.
Hell, to show how much people wanted to be with him Picard seeks the man out when he gets off duty! Showing that people weren't just getting Soctty out of their way, they just had shit to do. But, instead, Scotty acted like a bored-out-of-his-skull child on "Take your kid to work day."A fair assessment.
If memory serves, warp transport technology of a kind is implied near the end of Star Trek VI, when they're approaching Earth and Kirk wants to know if they're in transport range yet. As for the date of the publication of the theory in the original timeline, I don't think that the older Spock in Star Trek '09 had the opportunity to research it - so when he says that Scotty first postulated the theory of transwarp beaming, he's probably working from memory. As an aside, when programming the transporter Spock tells Scotty that it's his (Scotty's) equation for achieving transport beaming. NuScotty is surprised and impressed by the equation.I'd just like to add my name to the list of people who think Trekker 4747 has it bang on.
Also, in the new movie he's the inventor of warp transporting.
This episode takes place in a different timeline and we don't know that he invented that in both timelines. In-fact we have evidence to the contrary. In The Schizoid Man, the Enterprise has to approach the planet, drop out of warp and beam the away-team to the surface before warping away again. It is implied that this is dangerous and irregular. If they had that fancy "warp-transporting technology" they could have just beamed them there from outside of the planetary system.
Again I remind you, if Scotty had not acted that way, quote possibly everybody would have died! Do you want a do-over in which Scotty "behaves"? How would they have gotten out if he had not been such a pain?