Hi iSwagnific3nt! While a microphone is not manditory to join Cynical, we do want to stress the importance of having one. We will be hosting structured PvE and PvP events, and it's difficult to communicate effectively when a member does not have a microphone. I know from experience sometimes people are hesitant to speak over voice chat due to a language barrier, and if that is the case, please rest assured we have members from several different countries with a variety of accents, and our Guild is very accepting.
We would not require you to participate in long conversations if you were not comfortable with that, but even if you were able to say "yes" and "no" over the voice chat, that would go a long way I hope that answers your question, and best of luck with your decision!
Cynical is looking for more members to add to our roster. We are looking for both PvE and PvP players to add to our ranks, so feel free to check out our website and submit an application if you're interested! www.cynical-gw2.guildlaunch.com