I think our grandparent aged mods would differ. Yes certain moderators are old enough to be your grandparents.
Not my grandparents.

The article is about hardcoe nostalgia, and no you're never too old for video games, you just aren't looking hard enough for the good ones.
I don't think the article is really about hardcoe nostalgia. I think it's making fun of hardcoe nostalgia. It's about the way your perspective changes as you get older. That's what the whole "the reality" sections at the end of each entry are alluding to in the article.
When I was younger stories seemed more compelling because I wasn't as jaded. The "I've seen this story before over and over again" phenomenon becomes more common as I get older because...well...I've seen more stories and I'm more sensitive to repetition and predictability. Same goes for movies. My nephew will tell me about some "awesome movie" and I'll say, "that story's been done to death, and better." Then I'll rattle off a bunch of nearly-identical movies that he's never heard of.

My perception of time has changed a lot as well. I'm not interested in playing what is essentially the same game over and over again because I'm busy. There's no such thing as "killing time" or "being bored." I have a backlog of things to get done, other time obligations, and I try to have some semblance of a social life as well. I have to
find time to play games, so when I manage to sneak in some gaming time I want an interesting and new experience, not a re-hash of another game I've already played a hundred times or endless DLC that's just more of the same stuff tacked on. I'm not content to spend hundreds of hours ranging a huge game world killing the same zombie so I can loot
another glass dagger and a silver dinner plate. My "compelling thing happening per hour" requirement has increased. There's nothing wrong with any of these things, but as I get older and busier I have less and less interest in them.
Multiplayer games have similar issues for me. My friends are busy too, so it's hard enough to schedule time to meet up for a drink to catch up much less to schedule 4+ of them for a 4-hour gaming session. In fact, it's darn near impossible. That means I have to deal with the *gasp* general public. Again, I have 2 hours to play, so let's get this raid started. I'm not going to stand here for a half-hour in this town waiting for you to finish chatting with your guild-mates about your girl troubles and making your character dance around. It also gets tiresome to get 2 hours into something and suddenly have your primary healer say, "mom's calling me for dinner. kbai!" Thanks. Guess I'll try again next week.

Anyway, things change with regard to how you can and want to spend your free time as you get older. This just really started for me a few years ago, though, and I'm significantly older than the OP (but not nearly as old as "certain mods.")