I've been watching Youtube vids for a long time (well relatively, like 10+ years) and it's one of my primary forms of entertainment.
It has been very interesting to see youtubers come and go, a lot of them seem to burn out on the schedule of trying to produce content regularly, which I can understand, anyone who's edited videos would realise the time it can take to produce something of good quality.
Pewdiepie is an interesting case as he's far and away the biggest "real" channel on youtube (i.e. not VEVO or one of the generic youtube channels).
https://vidstatsx.com/PewDiePie/youtube-channel gives you an idea of the size, he regularly gets 5-10 million views a day!
The controversy seems very click-baity to me, I read the articles and watched his response videos. It seemed to me that he made some pretty bad taste comments (if you've seen much of his content that shouldn't be a surprise) and the WSJ deliberately sliced it up to take it out of context and produce the most sensationalised headline possible.
All reminded me of the quote generally attribued to cardinal Richelieu.
"If you give me six lines written by the hand of the most honest of men, I will find something in them which will hang him."