T.S.
My husband and son are avid gamers. As long as school, homework, chores, social time and physical activity/exercise are in balance I don't place any limits on how they spend their free time. Why should I? I'd hate it if someone told me I could only do my favorite things two hours a week!
And for the record my son is now a college senior, studying computer programming and coding, and excited about applying for silicon valley/bay area internships this coming summer. He's also been working as an instructor and counselor at a well known summer tech camp for the past few years. Glad I didn't discourage his natural passions...