Think it from their side.
They don't give two shits about blacks, LGBTQ, Republicans, or Democrats.
But they have a nice business going.
If they hire someone with the wrong thoughts and voting patterns, they might say something wrong, and it might cause ire and focus into the company from angry people on social media.
Sure, they'll fire the person pronto, but why go through the hassle?
It's better to ensure that whatever a new hire says (while on the job, or on his own social media, or even at his spare time), willd not offend the side that has the political / cancel clout atm. If fascism came to power tomorrow, they'd switch to questions like "Do you fully and wholly support the opression of minorities?" to hire you.
So, it's just good business. And if they're also ideologues that hate concervatives? To them that's a win-win!
Oh, and the people in charge of "company culture" or some such shit non-job need to find something to do, don't they?
Plus, it gives the company "progressiveness" points to use on some presentations, news articles, etc ("Why, of course we have a employee sensitiveness education program").