That’s not really the issue. The issue is that it doesn’t give you a proper URL with enough information to uniquely identify the set of results it loaded for you, so if you reload the page it re-runs the query and you get a new set of results instead of the same set you had before. That fundamentally breaks how the Internet is supposed to work: any particular URL should always go to the same resource.
The fact that Youtube also does lazy-loading infinite scroll bullshit makes it even harder to show examples about, so I’ll switch to Lemmy now. Take this URL, for example:
(That’s from navigating to page 2 of my feed, which is set to “all” and “top 6 hours”.)
If I go to that URL now, and then I go to it again, say, six hours from now, it ought to still show the same list of posts. But it doesn’t. Instead, it re-runs the query and shows me the new results from six hours in the future, which is an entirely different result set. That’s not what I want! I want to be able to keep navigating back and forth through the old result set until I explicitly ask for a new one e.g. by clicking on the instance logo or choosing a new search from the [posts|comments], [subsribed|local|all], and [sort type list] controls.