I wouldn't say follower (since I'm so far behind and stay as far away from news about it as I can of course), but I started watching it a little around 2016 I think, and quite a lot in 2017 and 18 when I was having long (one to sometimes even three hours) trainings on my indoor bike and wanted something to watch
Often it was MMA, sometimes a series, but I got to liking MMA and now I don't want to start watching with current events but work my way slowly back from April 2018 to live
I don't even Google anything about it, because I don't know who the current champions are for example and very much want to keep it that way. There's only one fight of which I know the outcome (Khabib vs McGregor) because I watched that one the day after, but the rest is going to be a surprise for me for a long time to come