Well he was tipped for one, but it's par for the course when any English player plays well. Likely just the usual pundit talk, but grabbing a combined 16 goals and assists for Leeds in the PL last season was pretty impressive.
You didn't say that though, you made out that it was outrageous to suggest people who rate Harrison higher, are somehow a-bit mental. Frankly, that's bollox. Let's see if James can be as influencial as Harrison was last season. I'm taking it you didnt watch much of him? If you did, you would see he's a good, tidy player. Maybe there's some recency bias here due to his poor start to the season.
Maybe you're overeating James too? I haven't seen anything in him to make me think he's going to be a huge success at Leeds. I guess time will tell. And no, Bielsa obviously bought him because he's likely planning on playing Harrison more centrally, a role in which he has played before at times.