For me depends on type of videos which you are creating. Personally, I hate all caps, but when you want to examine smething from name, then it is fine. Tried that before on few videos and my views went high quickly (wasn't partner when did this) for few days and after that video views was staganating. So, for gaming vids with reactions is fine (one example is Serbian Games BL which use caps sometimes on reaction videos), but for other more proffessionally made videos it is uneccesarry (IMO, if I use caps on tutorials videos people would be, whoa this guys is crazy and it would go away from videos)