Even in 2025 every other streaming site is unwatchable because of video buffering, videos not loading, and other hiccups in service that make it annoying as hell to use.
99% of websites in general suck, and the ones that don't get millions and billions of users.
Arrogant programmers think their products are great and they are geniuses, but in general 99.9% of their work is glitchy unusable trash and going nowhere.
Say what you want about youtube, it simply works better than anything else.