Rant about product tear downs on linkedin

If you are in the product management domain,u must have seen people post their product teardowns on linkedin,such as "ordering food on zomato", "playing a song on spotify" or writing a review on myntra etc. These just seem plainass dumb to me and involve zero thinking and seems to be just ppt making exercises.I get it if you are exploring a new product or not one used before,but making teardowns on such common products??Do these even help in any way?? I get it that trying and testing a product is the first step to understand any problems in it but what is the need to make a ppt out of *just trying it*,that is like a 10 15 minute work for most of the consumer facing products. Is there any sound to this madness or do you agree with me?