These are just alternatives to Google. Some are privacy-oriented, but others are just not Google. They may, in fact, be worse than Google.
That's not a bad list. Even if the alternatives are not "private", not putting all your eggs in one basket may be a good idea.
Noteworthy is the lack of Microsoft products in that list. Sure Microsoft isn't known for being the champion of privacy, but neither are Dropbox and Slack.