Ohhh, I do have a problem with the FA lecturing him. There is a big difference between what is required and what is requested. Turning off electronics before takeoff is required. Putting the tray up for the same is required. Not smoking is required. On those things, the FA should keep lecturing until the passenger complies. But when making a request, the FA should honor the passenger's answer and let it go. Asking a second time with additional explanation might be okay, but commenting on a customer's manners crosses a line.

Sounds like the OP was lucky that this FA didn't grab a beer, do a Johnny Paycheck over the PA, open the emergency exit and slide down to the tarmac.