Your first point is almost a meme at this point - so many products can be written off as pointless with the statement: > As a [type of tech person], [product]

Your first point is almost a meme at this point - so many products can be written off as pointless with the statement: > As a [type of tech person], [product] is completely unnecessary as you can easily build a similar system yourself by simply combining [tool A] with [tool B] and [tool C]. It's so simple! I'm not disagreeing with your point, but it misses the point that often the benefit of using a particular product is that you don't have to build it yourself, not to mention the other benefits you could get from using the exact same system as somebody else (e.g. sharing Postman collections).