Every sort of spinner, article generator, and that sort of stuff, including gpt-2 will never produce content of good quality. If you think that using this stuff you're saving money, you're totally wrong. On your money site having good product reviews will convert a lot more than spun, generated content. Instead, for something like web 2.0, you can do whatever you want if you don't plan to get a lot of traffic to your money site (a manual review is unlikely). The important thing to remember is to make those articles at least 50% unique.