I think the reason YouTube gets dumped on so much, especially in these parts, is because so many pipe-related channels on that medium fit into these two categories, both noxious to the sensibilities of many here:
1. Poorly edited and meandering videos recorded with a potato featuring people who, coincidentally enough, look somewhat like a potato themselves. Watching a stranger puff away and smack their lips, while exclaiming "Boy, that tastes good!" is not entertaining or elucidating. YouTube, like much social media, is a platform damn near anyone can stump from. There is nothing wrong with that, but to paraphrase the late journalist, Christopher Hitchens, everyone has a book inside them, but that is where most should remain. That's not a dig on YouTube itself, but everyone thinks their opinion is worth airing unto the entire world, regardless of merit or technical skill.
2. They are videos that are otherwise decently edited and featuring someone well-spoken, but the person is clearly using pipe smoking as an extension of their personality and philosophy. Watching someone using what is, at best, a hobby as a substitute for the hard work of actually forming a whole and decent personality, though sometimes amusing, is typically boring and a tad depressing. A lot of pipe channels feed into this weird romanticism and sentimentality that exudes the worst stereotypes about pipe smokers. Cigar channels are similar, where you have to listen to boorish manosphere types puff away on a cigar while bitching about how masculinity is under attack or some other nonsense.
That being said, there are lot of pipe videos/channels that go into teaching people about pipes, etc., that can be very useful and informative. I know those were important to me when I first took up pipe smoking, but now that I've a few years of experience under my belt, I don't really need that anymore. There are other channels, like Malcolm Guite's, where he smokes his pipe often and occasionally talks about it, but the real draw is personal charisma and story-telling abilities of the user themselves. The pipe smoking is largely secondary. Those can be good in their own right.
YouTube can be a great resource, and I don't begrudge anyone who finds enjoyment on any YTPC channel. But I totally get why most here, myself included, don't get much out of it, generally speaking.