Hey @biz55,
You can remove the subscribers from your WordPress.com dashboard. Switch site (if you have more than one) to the desired one and go to Jetpack > Subscribers. Click the “three-dots” icons in the subscriber’s row and choose Remove.
You may want to check that Newsletter option is deactivated for your blog. To do so go to Jetpack > Settings > Newsletter in your WP Admin.
Users can also follow your blog from the the built-in WordPress.com Reader. There is no way to prevent a published post from appearing for followers in the Reader.?
?
You can prevent your posts from appearing in Reader Search, tag listings, and recommended posts for non-followers, by setting your site to hidden from search engines, but that will not prevent people who already follow it from seeing your posts and will also not prevent new people from following it – as long as someone knows your site’s address, they can follow it in the Reader.?
?
Note that if you set your site to hidden like this, it also will not be indexed by search engines to appear in search results online.?
?
Could you share with me the reason why you prefer not to have blog followers? Understanding your concerns can help me suggest other options that may work better for you.
Thank you!