This is implying that people actually want to upgrade full releases. Perhaps I would like to make a Linux box and have it last a few years, and only patch it for security fixes as it is working fine. Yes if I do have to upgrade that system 5 years later it is going to be more painful than every 6 months, but if I did it every 6 months I would have to devote development time and switch context every 6 months.

Small updates are better if you have to upgrade entire systems, but many people do not want to risk destabilizing working systems every 6 months. For that we have LTS where someone will integrate in security fixes in a hopefully non impacting fashion and for that I am thankful