YouTube and YouTube TV are not the same thing. You can remove and reinstall YouTube. You cannot remove and reinstall YouTube TV.
The recent issue was with YouTube not working. That's what has been resolved.
Even though the apps are not the same thing, you can use the YouTube app to watch YouTube TV. On the menu on the left, at the bottom, is a link for YouTube TV. Since you removed the YouTube TV app, you'll have to use that link.
Roku Community Streaming Expert
Note: I am not a Roku employee.
If this post solves your problem please help others find this answer and click "Accept as Solution."