Many reasons including mental illness. This is someone who succeeded in her lifetime goal of becoming financially free and succeeding at the highest levels as a recording artist.
And yet she was actually responding to trolls on twitter. Does that seem like the behavior of someone who is happy and mentally stable? She's looking for community when she's being rejected by women, black people, and her own fans for the decisions she made.
Just like hollywood and most people rejected Kevin sorbo, James woods, Gina Carano, hulk Hogan, etc. She's drifting towards where the losers gather: maga.
These people dont want to learn, they dont want to grow. They got used to not hearing the word "no" and have become rotten from the entitlement that created in their souls. You can buy jets, cars, houses, entire neighborhoods but you cannot buy respect. A loser with money is like a duck with bright feathers. It will never be regarded the same way as we look at a peacock. It is still a duck.