Congrats, you'll love this little beast.
Make sure you get the trans checked out, look through the service history for any evidence of a dealership performing TSB 18-NA-355 (see the detailed TSB itself
here) that prevents shuddering. If this service was never performed, your trans will likely shudder as described in the TSB, if is hasn't begun already, and the sooner you take care of this problem, the better. Other than that, you want the latest infotainment software upgrade for the 2016, there were a few since this is the initial model year, but you should be good for the most part.
If you want to mod and tune the car, it will be much cheaper to do than with 2017+ model year Camaros, because nothing was locked down in 2016, then GM started this "game" in 2017, and its latest architecture that the C8 Vette is on is much more difficult to crack (meaning more $$$ for you to pay).
You have no reason to be snarky, he did say he was gonna check the oil pan bolts when he changes the oil. Also, he simply described his experience on his first drive, being the owner of a 800 rwhp RWD car, and politely asked for recommendations. I'm sure you never made any mistakes and knew everything the moment you came out of the womb.