Hello
Thank you for reaching out and I am happy to help!
This is for the “Anonymously track usage to improve product quality” option that you can enable/disable in Performance>General Settings>Miscellaneous section of the plugin.
To answer your question, W3 Total Cache will still run normally on your website, the only thing is that you are not sharing the usage of the plugin, like the options used etc.
I hope this helps!
Thanks!