It is not only black Twitter, but also the inclusion community. The petition is launched by a Kimberly Jones,
South African Parliament to Reconsider Mr Renaldo Gouws due to Racist Remarks
www.change.org
promoted by this user,
x.com
and,
x.com
amongst others. Renaldo dug his own hole, but it is not unique to him, others have simply navigated it better than him, and well, some are aligned with social issues. This is best dealt by the DA as a body.
I don't like politicians, so this is as much as I will say on this matter.