[SebiH]

A more recent video claims that the PS/2 advantages are negligible even for serious gamers (around 3:40) https://www.youtube.com/watch?v=AWkvzycD5PE

[ghusbands]

The message therein directly states that latency isn't noticeable for those keyboards and hence, according to the article, is simply uninformed.

[sturmeh]

Most importantly it removes the penalty of using a 1000hz scanning input which can have an adverse affect on the cpu whilst providing a better (yet insignificant) result.