In my desktop at home the main OS is Ubuntu, basically since more than 15 years, but I own also 2 Chromebooks laptops. I have a Lenovo Duet which i use mainly because I can run both Android and Linux apps, and it allow me to watch streaming services in offline. I would prefer to use any “gnu-linux” distro on a portable device, but if you wish to watch Amazon Prime or Netflix offline, you can only use a tablet with Android or iOs but on linux pc you are limited on web app typically, except in Chromebook which has some extra flexibility. Also I don’t find invasive so far, more or less we have the same privacy settings as in Android. As benefit it’s supported for 10 years for OS updates. And, in the future I may also decide to install a pure linux distro if I need.
I have used years ago different download platforms, years before Torrent, in the time of Napster, Emule etc. but so far the official streaming service provide a good offer, without wasting time. I don’t think it worst the effort to download illegally ie comparing with price of Prime. I see now a tendency when the platform cost will increase and users should, in theory have 10 platforms, where i may understand the reason for people returning to illegal download. The streaming service companies should think carefully before increasing the price or creating new rules to share the cost.