Maybe it wasn't sudden (or was it? Can't remember), but I feel fuji's transformation was quite a dramatic turnaround from his old self. Not only just a shift in aesthetics, but overall attitude and demeanor. Nothing against that, as I prefer this new fuji, just something I noticed that really stood out to me.
I wasn't around when fuji first joined, but after seeing his pre sf pic, I must agree. It's hard to believe they are the same person, tbh.