I also think that software, site, plugin updates are very important. This allows you to keep the products in good condition and always keep them up to date. As for plugins, this is especially handy because, for example, I recently bought a Magento rma module plugin from Amasty and got a lifetime plugin update. I think this is a very customer-centric approach.
Regular updates are essential for any software/plugin may it be Magento 2 RMA Extension or any other software as it saves the software from the vulnerabilities and provide customers with the new features as well as security.
