You see people's messages and the time that they were posted using your local time zone.
Is there any value in having the ability to view the timezone that person was in?
I am a member of several spaces where team members work in a variety of time zones.
Being able to engage the right person at the right part of the day could be useful.
Did some one post an urgent request whilst they were leaving the office at 5pm their time?
Did some one ask for help in their morning?