empirical evidence for benefit from ankle taping is scanty at best.
pretty general remark bro, in which case in particular? Preventative? Rehab? Chronic? Etc.
all of the above. after i got my third ankle sprain a few years ago i started doing research and stuff -- which is what eventually led me to start working out in a structured/serious way -- and pretty much every paper i ever found on the subject was ambivalent or plainly negative on the effects of taping. there's either no difference from placebo (i.e. tape placed haphazardly) or no difference from an untaped state.
at some point i even came across a paper theorizing that tape could even negatively affect re-injury rates by providing a false sense of security.
that doesn't stop people from doing it and taking it really seriously, and i'm just a random guy on the internet who did a bunch of pubmed searches a few years ago. who knows, maybe all those NBA and NFL trainers are onto something. but nothing i found indicated that there's much there there.
ETA: the title of that video, "Why Front Squats are Better for Athletes," indicates that the person making the video may be retarded. any such categorical statement (see harvey's recent "you will notice that sprinters are massive athletes" for another example) is likely to be broscientific.