Now, social media pays people for becoming celebrities, so the culture is a lot more staged as a result... It's not the fault of people who otherwise catalogue their activities and travels, so this should always be kept in proper perspective.
Social media rewards vapid, ignorant, and self-obsessed behavior in tech bloggers and politicians as much as it does wealthy teenagers that do nothing more but filming their daily self-absorbed excess within their lifestyles.
Normal and aspiring creators share the photos for those that care in hopes of being discovered, but most of the time they're off the platform's scripts, so they don't get promoted at all by the platform. It's the corporately engineered algorithms that should be blames for presenting personality/brand based (staged) content to most of us on purpose whenever we ritually don't like the content.
If you don't like content that is not based on personality, start clicking "like" on stuff that isn't popular, and not based on the common ego-driven social media tropes...
Also stop supporting things that make social media bias, personality cults, and consumerist/psychological manipulation popular... TikTok literally tells platform users what kind of content to create, that way they shape most of the experience on the platform into most of the repetitive "personality-driven" drivel that we see promoted on it (on purpose) all the time.
Photos can also help jog memory of a specific time and place that you otherwise would not remember.
I more often ask myself why people are doing images of only the landmarks (instead of actually enjoying them) when they know just as well that their cameras and photo skills are crappy compared to whatever Google spits out.
It's just to show off where you have been. Traveling is most of the time to show off. According in the environment I'm in.
Years prior, it would've been too awkward to take a selfie in front of the Eiffel tower, so you'd have to get someone else to take the photo for you. They'd probably be standing much further back than the length of your extended arm, or even a selfie stick, so you'd naturally end up with more of the attraction in the frame than the traveller.
If it were possible to get both the detail of a tight portrait shot AND a good framing of the attraction AND it were as easy as taking a selfie, then we'd probably see more photos where the attraction is less "shaded" by the traveller.
Having said that I do think that a lot of "Instagram travel bloggers" exhibit selfish/narcissistic behaviours.