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.
Yes, life-time update support us very customer-centric no only for Magento 2 RMA extension but for every software/plug-ins.