Delete Channel from Channel Roku Store

When looking for official documentation about how to delete a published channel from the store this was the only post I was able to find: https://partnersuccess.roku.com/hc/en-us/articles/360020710473-How-do-I-remove-an-already-launched-channel-and-how-does-that-impact-users-who-have-that-channel-installed-

Is this still valid? I'm trying to come up with a timeline for deleting the channel from the store, and I would like to get more information about how long can this process take. The only thing I see different from the article is that my channel is public and published but I still get the "Delete channel" option in the "Manage my channels" screen. Will clicking "Delete channel" be enough, or do I still need to create a ticket with Roku Partner Success?

Thanks in advance