The option to “discard” suggested contacts in your chat list is rolling out to users. We will be making further changes to make suggested contacts more relevant for new users in the future as well, so marking as partially completed. Thanks for your patience with this one.
~Alex & the Teams teamFabien Duval commented
Teams is used at my school. Suggested chat contacts are all kind of students not even in my domain. This is the most irrelevant thing I ever see on Teams.