Are you really comparing the 'power of someone to say something at work in 2020' with things like 'Black people were not allowed to have mortgages until one generation ago'?
First, I feel you misrepresented my comment. “Saying something at work” doesn’t quite convey the same thing as “given a platform in front of hundreds of employees at a formal event with full support and endorsement by HR and company leadership.” The latter sounds a lot more like actual discrimination because it’s backed up by explicit and established power structures.
Second, you’ve selected examples separated in time by decades. When you grant yourself the power of time travel, it certainly does become a lot easier to come up with examples. The world is changing fast nowadays. The landscape is completely different today than it was even 10 years ago.