Personally, I don’t think switching your OS “as a protest” is a good idea. Bill Gates is so obscenely wealthy that your protest will have literally zero impact. Not “very small” impact; actually zero. As in, the whole world could abandon all Microsoft products and Bill Gates would still be able to live exactly as he did before. It’s not worth your mental health to let his actions have that level of control over you.
All that said, you should switch to Linux because it’s a better OS (as long as it does what you need).
Personally, I don’t think switching your OS “as a protest” is a good idea. Bill Gates is so obscenely wealthy that your protest will have literally zero impact. Not “very small” impact; actually zero. As in, the whole world could abandon all Microsoft products and Bill Gates would still be able to live exactly as he did before. It’s not worth your mental health to let his actions have that level of control over you.
All that said, you should switch to Linux because it’s a better OS (as long as it does what you need).