WooCommerce Express Checkout requests

You asked me to open a new ticket.
This is about an answer that you provided in another support thread where the reply provided was:

Based on your requests, I noticed that our plugin intercepts unnecessary hooks and because of this, our plugin causes false positives. Changing the cookie option won’t help in this case; we need to exclude the hooks.

Please exclude them from CleanTalk checks by adding them to the “Form Signs Exclusions” field in the plugin settings using the regular expression format:
.*wc_express_checkout_login+
.*wc_express_checkout_continue+

My questions are:

1. Should any WooCommerce store using some form of Express Checkout gateway add these exclusions?
2. Will adding these exclusions leave the payment gateway completely unprotected?