Almost all males I know are not on instagram, and I'm in my early twenties. It's not like Facebook in that you might "miss out" on things like invitations to events or participation in groups. It's just a photo sharing website. Calling it "modern society" is just ridiculous hyperbole
None of the males in my circle of friends (spanning mid 20s to mid 30s) who aren't single are on social media at all. The two single ones are only on social media because that's where they coordinate dates/hookups. Events and get-togethers are organized ad hoc over text or instant messaging (Whatsapp). I don't even know what possible use I'd have for Instagram or Facebook.