I've been saying this for years and long before nostr. I've been streaming since 2018 and it always blew my mind that creators have no measure when it comes to the size of their content. Images or videos, makes no difference. Most people watch streams, podcasts and co on mobile devices these days. 4k is absolutely overrated. We're not watching to read text on-screen but to watch video content.
Discussion
4k is a luxury. But 1080p is absolute minimum. Have you watched porn in 720p? It makes you wanna spend more on your internet.
I only watch HD porn in my home cinema on the big screen. When I watch it on my private plane on the phone 480 is good enough to flap before landing.