If you're 40 years old, you need to be able to consume any kind of media and then place yourself into the mindset of a younger person and judge it from that mindset - because you used to be that younger person.
Truly exceptional media is good enough to transcend the age barrier and is enjoyable for everyone, e.g., The Incredibles is enjoyable for young kids because it's a cartoon and it's flashy and exciting, it's enjoyable for young boys who want to be the "best" at a sport, it's enjoyable for girls transitioning to puberty because of Violet's storyline, it's enjoyable for men who have lost some of their steam and can relate to Mr. Incredible, and it's enjoyable for women because of the struggles Elastigirl has as a mother and a homemaker. Even Syndrome is shown as a sympathetic villain who is evil not because he is a bad person, but because he was dismissed and ignored by his idol. There are plenty of people who can relate to that.
Ghostbusters (1984) is another expertly crafted movie that is fun for kids, but well-written enough to be incredibly enjoyable for adults.
When my young cousins or my nephew corral me into playing a game with them, I'm not playing it from my 41-year old perspective, I'm playing it through their eyes.
If you can't do that, then don't review content. Content always has a specific audience. Really great content can weave together enough bits to at least satisfy every audience. Exceptional content manages to speak deeply to every audience. I still feel that's why The Incredibles is one of the best movies ever made. The struggles shown in that movie are relatable for every single person on the planet.
I haven't played Elden, but for comparison's sake, I haven't had any trouble picking up SMB3 blind nor did I find any of the levels individually more difficult than most high rank monsters in Monster Hunter Rise. SMB1 definitely isn't a difficult game either bar a few specific levels, 8-3 being the most notorious.
The biggest thing I see people struggle with is patient, reactive and/or predictive gameplay. Any game with counter mechanics relying on tight windows showcases this: most people either fail to utilize them or simply don't bother. Let alone emergent counterplay. The other part, you can't just statstick your game through most older non-RPGs, where newer games provide you with many more methods to allow more failure.
All of these things and more are the kinds of things that a 40 year old should consider in their review of a game, especially considering that a 16-25 year old game reviewer might miss on them in favor of other aesthetics.
When you get right down to it, it’s a movie about exterminators—not exactly fun-for-kids fare. And yet…
Most reviewers I watched heading into Horizon: Forbidden West said that it was just "more of the same". But I didn't play the most recent Far Cry or Assassin's Creed or whatever else they were comparing to. It was fresher for me playing though it than it was for them, constantly comparing.