The sloppy definitions allow all sorts of stupid conspiracy theories to be "proven true" when they clearly aren't. Twitter's always limited reach of accounts, that's been in their TOS for 4+ years:

https://help.twitter.com/en/safety-and-security/tweet-visibi...

The conspiracy theory that Twitter shadow banned accounts to a level in which even people looking for their Tweets couldn't find them, remains false. Everything that everyone Tweets is visible to everyone who looks at their Timeline. This is explicitly how Musk promised to run the service, "Freedom of speech, not reach" and is basically how Twitter has operated for years with the exception that old Twitter banned people who repeatedly violated the TOS.

No, everyone knew that this system existed for quite some time. The site's UI even surfaces it by hiding some filtered tweets behind a "view more" button. The conspiracy theory is that the feature was used specifically to silence conservatives for their political views, or that huge conservative accounts that showed up everywhere were somehow suffering from it when their latest brain enhancement pill sale didn't go well enough.