I don't understand why any wife would complain about any hobby.
My wife likes to watch cooking shows, which I think is incredibly boring, but I would never give her static about it.
Why would I? Why would I care what my wife does with her time? She wants to watch boring TV, then be my guest.
The only reason I could think of for a wife to have any legitimate complaint about pinball is if you were short on money. These games are expensive, so it might be considered a needless expense.
But if your wife has a gripe your pinball hobby just because she personally doesn't care for pinball, then she's being a jerk.
A wife like that would complain about any hobby you had. If you liked fishing or bowling or stamp collecting, she'd be on your case about that, too.