Abbreviated public subscriber counts are gradually rolling out starting next week. We heard a lot of feedback from the community following our announcement in May – we’ve updated our original post with more info here → https://yt.be/help/LF4J
They are trying to get rid of/ mitigate the drama that's caused when people look thru social blade to point at Youtubers losing subscribers. In some ways it could be a good thing. But I don't agree with them doing this at all. It's the wrong approach.