It is incredible how his earnings have gone from $5.2k/month in June 2018 to $3.7k/month in June 2019. 30% loss in one year. I seriously doubt that $45k/year before tax is "quit your job and turn pro-youtuber" money, even in Georgia (I think that's where he lives?) - and that's assuming he doesn't have any paid employees. God knows what they must make.
It looks like he is trying to turn it around, going back to publishing more than one video per month - but even since he changed tack he's only managed to slow the trend - he's slightly worse than flat in cash terms for the last three months.
Posters in this thread don't seem to be the only ones disappointed (numbers in this image are for all-time):