Almost all OS for computer and smartphone are large, complicated programs. Who knows if Windows 10 harvests or doesn't harvest info in some way? Even Ubuntu has grown to gigantic size, and is constantly being upgraded almost on a daily basis. Mac OSX is gigantic, as well.
If you are really interested in safety, you need to use a little OS like Puppy Linux, and totally - Veracrypt - encrypt any info you want to send by Windows, Mac, or big Linus OSs. And you need to do this before placing the encrypted files onto the big OS.
If you are really interested in safety, you need to use a little OS like Puppy Linux, and totally - Veracrypt - encrypt any info you want to send by Windows, Mac, or big Linus OSs. And you need to do this before placing the encrypted files onto the big OS.