I'm guessing you're either missing or deliberately excluding the HUGE push by Youtube for "Youtube Shorts". Personally, I vastly prefer long (20+ minute) videos. However short videos are good for quick DIY / tutorials when I'm unable to find a written equivalent.
the huge push for youtube shorts is to compete with tiktok and instagram for that segment of the market. the longer form videos are a different segment of the market, they aren't entirely related