Having 50k members in their telegram channel cannot measures the success of the project, it will all be base on the total token sold so for now maybe we can tell that the exposures and popularity of this project are improving well.
The members in the telegram channel are often no good indicator because it is a lot of fake also. There are other projects with many members and they also didn't raise a lot.
There are a lot of bots and fakes in the telegram. You can observe it if you are an active member of the group chat. But the good side is there is a lot of good information that you may find from the ICO or project. you want to know there.