Banning one app from China isn't going to help. We need to ban all companies who are owned even in part by China. Tencent alone owns parts of a lot of companies.

https://dataromas.com/what-companies-does-tencent-own/

Before I get downvoted to the bottom of the sea, keep in mind that under current Chinese law any Chinese company must comply with any and all government requests. That could mean turning over user privacy data to inserting backdoors into services.

https://thehill.com/opinion/cybersecurity/532583-for-chinese-firms-theft-of-your-data-is-now-a-legal-requirement/

Edit: and that's just one Chinese company.