I apologize for this late change:  I've added one more sentence to https://meta.wikimedia.org/wiki/User:Whatamidoing_(WMF)/New_beta_feature  It says "You may write comments in any language."  

Mediawiki.org is a multi-lingual site, so feedback and comments are always welcome in any language – but, of course, not everyone knows that, so I should have included this statement in the first draft.  I'm sorry about this late change.

By the way, if you're interested, then here's a list of the top 10 Wikipedia languages as ranked by the number of currently active editors:
  1. English
  2. German
  3. Spanish (no translation started yet)
  4. French
  5. Japanese (no translation started yet)
  6. Russian (no translation started yet)
  7. Italian
  8. Chinese (no translation started yet)
  9. Portuguese (no translation started yet)
  10. Arabic
On this message, after just one day, we already have translations for half of these popular languages, plus Greek, Norwegian Bokmål, Swedish, Ukrainian, and a couple of others that are still underway at the moment.  Thank you all for your quick and helpful responses.

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Sherry Snyder (WhatamIdoing)
Community Liaison, Wikimedia Foundation