The arguments presented by dragondrop are a classic example of FUD. The author is afraid of what Hashicorp can do if we don't just ignore the license change and pretend nothing happened. Based on that fear, they present various scenarios that seem scary to them. But when you look closer, these fears are ridiculous.
For example, "people will be confused whether they should use TF or OpenTF". Guess what: at the beginning everybody will be using TF except a small minority who will consciously chose OpenTF, mostly for development. And they will make sure that, at least at the beginning, the choice will be irrelevant because the compatibility between these two is a top priority. It's like saying in 2004 "You shouldn't release CentOS because people will not be sure if they want to run CentOS or Red Hat". It simply makes no sense. All other arguments are like that.
For example, "people will be confused whether they should use TF or OpenTF". Guess what: at the beginning everybody will be using TF except a small minority who will consciously chose OpenTF, mostly for development. And they will make sure that, at least at the beginning, the choice will be irrelevant because the compatibility between these two is a top priority. It's like saying in 2004 "You shouldn't release CentOS because people will not be sure if they want to run CentOS or Red Hat". It simply makes no sense. All other arguments are like that.