[mattmcal]

DuckDuckGo allows you to blacklist websites for free

[Groxx]

Only up to five of them, which is almost completely useless.

[teruakohatu]

Blocking Pinterest is not completely useless.

[Groxx]

The top seven blocked domains on Kagi are all Pinterest: https://kagi.com/stats?stat=insights

Failing to block Pinterest and then also having no room for anything else is almost completely useless.