But it can't because it doesn't have the right structure (e.g. GPT-3 finishes in a finite time, a program in a real programming doesn't necessarily!)
GPT-3's greatest accomplishment is that it has "neurotypical privilege", that is if it gets an answer that is 25% or 95% correct people give it credit for the whole thing. People see a spark of intelligence in it the way that people see faces in leaf axels or in martian rock formations or how G.W. Bush looked in Vladimir Putin's eyes and said he got a sense of Putin's soul. (That was about the only thing in his presidency that he later said he regretted!)
As an awkward person I am envious because sometimes it seems I get an answer 98% correct or 99.8% correct and get no credit at all.