A list, what features each provider has, and leave it to yourself to make the judgement. If you're being told why it's good there is bias involved somewhere along the line.
Of course, you need to understand whether the site has updated their information and presenting it truthfully, which should be easily verifiable.
That's mentioned in the article, but it does bring up the caveat that many consumers are just looking for an answer, not the information they need to form their own answer. That's why VPN review sites are so common, it's a quick and easy response rather than a list of features to sort through and compare.
A list, what features each provider has, and leave it to yourself to make the judgement. If you're being told why it's good there is bias involved somewhere along the line.
Of course, you need to understand whether the site has updated their information and presenting it truthfully, which should be easily verifiable.
[1]: https://thatoneprivacysite.net/