WHOIS data is worthless nowadays. A lot of people host content on Wordpress, Github, Medium, etc. where the WHOIS data doesn't tell who is actually responsible, and the shady sites are using services to hide the true WHOIS data anyways.

Edit: There seems to be a misconception (or a lack of reading comprehension). Hiding is not shady, but shady sites hide WHOIS information always. So it's eventually useless for the one thing it should do: give information about the owner in case of unlawful content.