Blocked in government institutions? absolutely! Though, I believe that ALL social media should stay off of government owned devices and networks.
Banned entirely? absolutely not. I can't stand TikTok myself, but I don't think it needs to be banned by any means. FB, Twitter, and essentially every web company collects just as much, if not more data than TikTok does, and frankly if you're gonna ban one of them for that, you should ban all of them for that.
However, I strongly disagree with this, and I believe you should have the freedoms to use whatever platform you want, but if a company(or in this case, government institution) allows you to use their resources, then they have the right to not allow certain websites to be accessed on said resources.