Did Chen Zhenglei's line ever had more similarities to Chen Zhaokui's teachings at some point? I remember reading Chen Zhenglei learned from Chen Zhaokui, but something like "attended some workshops when he's in town" kind of arrangements.
Today, it looks like the major lines from the big 4 are all normalizing to a similar "village style". The details are being smoothed over into more simple big flowing movements. Maybe makes it easier for people to see and follow, so they get bigger class sizes and profit.
Oh, and I guess because the movements become more simple, the applications end up being more simple as well and use more brute strength.