Some servers permit it while others don't or are silent on the matter. I know of at least two big servers which has this "Blind Effect Removal edit" included under the Guides section in their forums. Sure, there were some debate about it; but the GMs/Mods appeared to have allowed the edits. I even know servers which until recently permits Botting legally (not Homunculus AI or Mercenary AI; but actual OpenKore bots). So,it really depends on your server rules.
This edit is nothing revolutionary. I stumbled upon it by accident while perusing the forum of a big server. Further investigation led me to find several other similar guides in different languages - German, Spanish, French, Chinese and Japanese. The Japanese guide was most interesting because it dated back to 2006.