Yeah, I 100% agree. It's rather tonedeaf to criticise that commenter for diminishing the cost, and then diminish in exactly the same way the work involved in creating this.
And I'm so tired of the game of "describe a successful tech product in a way that makes it sound silly". Yeah, Twitter is just storing a load of VARCHAR(240)s, and Facebook is just an undirected graph, and Jackson Pollock's paintings are just splatters, etc. I could build it myself! Except... I don't, because it's not that easy, and I know it isn't when I think about it for more than 1.7 seconds.
Sure, in which case you're welcome to build every tool yourself. Me, I'll carry on doing what I specialise in for a living, and use a trivial crumb of my earnings to pay someone else for lovingly-made readymade products. Same way I do for my WiFi router, for my readymade mac & cheese, etc.
Ironically you could do the same with your replies.