Exactly. There is nothing inherently wrong with a single developer building an entire product, and I know a lot of very good "10x" developers who work mostly on

Exactly. There is nothing inherently wrong with a single developer building an entire product, and I know a lot of very good "10x" developers who work mostly on their own and build great products. The reality is that there really are a lot of 10x developers out there, but there are also 0.1x developers like this guy, who actively sabotage projects.