I have yet to meet any person in real life who has spoken of Subscribing to a YouTube Channel. I have never subscribed to any YouTube channel or even smashed the Like button on any YT video. I find the social media oriented facet of YT to be completely useless and irrelevant to my purpose of finding and viewing certain videos.
This whole pretend culture around youtubers is as alien to me as it would be for a Commanche Indian from the old West to be given an electric hairdryer.