YouTube is free to do what they want but sensible actions should be informed by the law. Currently, you can't be charged with anything for describing how to do something.
It goes even further: you can sell a kit with instructions on how to make something illegal and this is perfectly fine.
The channel seemed to be offering links to download pirated software too. If this was occurring, YouTube did the right thing.
"Burp Suite v1.7.30 Pro Cracked Version Download Details:- Version:- 1.7.30 Pro License Expires:- Dec 2 , 2018 Size:- 26 MB Download links:- https://drive.google.com..."
It goes even further: you can sell a kit with instructions on how to make something illegal and this is perfectly fine.