I don't see anything "harsh" in that email. If you go to the subscription page it clearly states:
Thank you for considering the various different contribution methods at Club Cobra. While each provide more or otherwise enhanced features, the real purpose is to show support for the site and the moderators. The money will be utilized to support the monthly costs, long term expenses, and sharing with the moderator staff. We appreciate the support! As a contributor, you'll get an icon by your name in every post you make showing your contribution.
http://www.clubcobra.com/forums/payments.php
So subscribing is a way to support the website with a donation. All you are going to lose if you don't renew your gold member status is:
Large Avatar
200mb Space in Gallery
More Private Message Storage
You will still have complete access to the forums and the site itself.