The team is actively handling the telegram group, where you can get instant replies on your questions. As well the community is continuously making active discussions on the group.
Not everyone uses this instant messenger. Some still prefer to scoop information completely from other sources out of old habit.
I think everyone have been making the use of telegram and the telegram community is a big part of the project and their contribution is good in promoting the platform.
This messenger is popular, you are absolutely right, but there is no sense from these groups, all users enter there just like that and there is no activity there.