If you wait in front of an empty screen it’s much more pleasant than being in front of visual and audio spam drilling into your head.
It’s of course true that YouTube can’t support a website for free, so it would be the correct thing to watch some ads: problems arising are that (A) some ads are malicious (either as misinformation or as viruses or as links to those), (B) they’ve grown from a reasonable amount to an unreasonable one and often interrupted at the worst possible time)