Some of these are peoples' first sculpts. It's an open forum. Rather than being an ass, take some time to look at the more detailed, professional models people have done.
Or rather, I'll list some - since clearly you're too smug to do the work yourself:
And those are just a few, out of thousands, of digital sculpts done by professionals and amateurs alike. Picking a few amateur sculpts and making fun of them is both a disgrace to the art community and Reddit, and you should feel bad. Crawl back into your talentless hole.