... Squeenix disable /whisper in parties.

LMAO.

In 8-man content it's usually very important for tanks and healers to communicate to organise things, so /whisper would be the preferred method in the absence of voice-chat .. and what PUGs use that?

Yet Squeenix have deliberately disabled this, forcing you to use /party or /say which are often spammed with battle messages, etc.

Why Squeenix, why did you implement this fatuous restriction?