I further edited my original post. I believe it does, as it is specifically outlined as part of 'nuisance behavior'.
https://support.na.square-enix.com/f...la=1&kid=68216Prohibitions in Final Fantasy XIV
■Prohibited Behaviour in Final Fantasy XIV
In Final Fantasy XIV, obstructive behaviour that has an adverse impact on other users' game play and on service operation is prohibited. Such behaviour violates the Final Fantasy XIV User Agreement and Square Enix Account Terms of Use, and may violate other Square Enix policies or terms of use, including the Final Fantasy XIV Forum Guidelines. If a violation is confirmed as a result of our investigation, Square Enix may, in its sole discretion, apply a penalty to the relevant Final Fantasy XIV service account. Please refer to "Account Penalty Policy" for details of the penalties.
Depending on what was actually said in their chat interactions it may fall under 'Offensive Expression' as well:Impersonation
"Impersonation" means impersonating or fraudulently claiming to be other players, SQUARE ENIX employees, or any third parties. This could involve using a name that resembles the character name, Free Company name, etc. or is used by another person, or using a name that is the same as or similar to the name of a Square Enix staff member.
Offensive expression
"Offensive expression" means an expression in general that inflicts emotional distress by being offensive to another person. Offensive expression may include:
・Aggressive expressions such as violent language/slander/insult/threat.
・Expressions that provoke or belittle another person, such as excessive criticism, negation/ridicule
・Expressions that significantly lack consideration for another person
・Expressions that unilaterally reject another person's opinion
・Expressions that any reasonable person would find offensive
・Expressions that compel a playing style
・Expressions that attempt to unilaterally exclude someone from the game or content/community, etc.
(Except when in accordance with rules set by an administrator such as a Free Company Master)
・Expressions that contravene public order and morals
・Other expressions that are offensive to another person
Offensive expressions are prohibited in all places where expressions can be made in Final Fantasy XIV, including chat (including Quick Chat and Emote), markers, comments and names. Use of an offensive expression in the form of a character name is also regarded as nuisance behaviour.