Possible support for Jetpack email subscriptions?

I installed Better WordPress ReCaptcha plugin version 2.0.3 hoping that it would add reCaptcha to the email subscription field that Jetpack makes available for deployment in a theme as a widget. You can see the “Subscribe to blog via email” widget at the bottom of the right-side widget area on my site.

I know that MailBait, along with other nefarious services, are basically databases of sites based on known frameworks (like WordPress) and I don’t my site included as a place where a bot can subscribe addresses to my site.

Can support for the Jetpack email subscriptions widget be added?

Best regards,

Paul