I think I can understand the feeling, even though I am not sure at what exactly you are pointing.

There's IMHO a lot to do with categories, audience, and purpose.
When you add a umpteenth picture to one of the "razors clubs" for example, would you expect the poster to add a lot to the topic ? The category and the purpose don't seem to ask for much more

When your audience is, in the end, a group of luddites who roam here because they have not yet (and, I speak for myself, will probably never) made the turn to social networks where everything is happening nowadays who have been here for years, what much more can you tell ?

On this topic, we have a joke here with a bunch of inmates who know each other's jokes so well they numbered them and just have to summon the number to summon the associated laugh.
Then this one guy goes
- 76.
....
- 76
....
- Come on guys, 76 it's a funny one
- Yes but you just don't know how to tell a joke

If Gasman (first name in mind, don't take it the wrong way) posts a W&B FBU (see, we don't even need the full words anymore) tomorrow that he bought on ebay, what would he provide as a post ? And would anything more than a like be an appropriate answer ?

Don't get me wrong, I love quality content, heartfelt stories, in depth reviews.
But, well, mostly, most of the people still coming here have more or less seen it all, done it all.
And, maybe, just maybe, that's why there are less and less deep and insightful posts about razors and shaving, and more and more "chaff" ?