99% of everything I watch is 4K.so with premium do you get a lot more 1080 material served up rather than 720 ?
recently got a new laptop and at least for both youtube(Ublocko) and skygo those produce a better quality picture on the panasonic/4k tv if you let it do the upscaling,
and tell the laptop that the external/hdmi tv is only 720,
maybe native youtube app on the tv would produce a better picture, albeit with adds.
(I need to survey some of the content I see regularly with get-yt , and see if they have 1080 streams available for premium users, even though they don't have 4K)
251 webm audio only 2 | 8.70MiB 144k https | audio only opus 144k 48k medium, webm_dash
+
397 mp4 854x480 25 | 11.41MiB 189k https | av01.0.04M.08 189k video only 480p, mp4_dash firefox ublocko win 11
398 mp4 1280x720 25 | 20.56MiB 341k https | av01.0.05M.08 341k video only 720p, mp4_dash firefox ublocko win7
399 mp4 1920x1080 25 | 37.57MiB 623k https | av01.0.08M.08 623k video only 1080p, mp4_dash edge win 11
400 mp4 2560x1440 25 | 165.27MiB 2741k https | av01.0.12M.08 2741k video only 1440p, mp4_dash
401 mp4 3840x2160 25 | 373.95MiB 6202k https | av01.0.12M.08 6202k video only 2160p, mp4_dash
313 webm 3840x2160 25 | 637.57MiB 10574k https | vp09.00.50.08 10574k video only 2160p, webm_dash
hmmh ... so I looked at the youtube video formats (stats for nerds etc) I can get non-premium using full screen on a 1080 laptop on this video
the good stuff with premium sub would be