It is what it is. A moderation tool.
Proly needs a better name tho.
""We have very clear rules around trends and what we don't allow to trend," a Twitter spokesperson told Motherboard when asked about the "Blacklist" tags we see in screenshots of the internal moderation tool. Twitter also directed us to its "Twitter trends FAQs" page, where it makes clear the platform prevents content from trending if it contains profanity or adult/graphic reference, incites hate, or otherwise violates Twitter's rules."