The comment I was responding to was "Almost all of those procedures are perfectly ok as long as everybody is not doing the same ones. The problem appears if every well paying job requires your to have a public portfolio."

IOW, a fair reading is that the parent acknowledges that the practice excludes people who aren't in a position to have a public portfolio. (For whatever reason: IP rules, family obligations, lack of interest in programming as a hobby.) And that would be a problem if everyone did it. But everyone doesn't so it's OK as long as just some of us do it.