At many domain registrars, Whois privacy is a nice upsell opportunities. Some domain registrars, like Uniregistry (and now Namecheap) offer free Whois privacy for domain names registered there.
I have never been a big user of Whois privacy, but there have been times I used it at Uniregistry when I wanted to keep an acquisition or sale even more private than usual.
How often do you use Whois privacy?
Last poll question: Will Uber Buy Jump.com?
We do not need whois privacy anymore cuz GDPR here
That’s my understanding as well. Whois privacy should now be default for all registrars. You have the option to opt-out though.