Notice how it’s not a personal decision about whether or not the person will continue to associate, but the ‘decision’ is to not associate.
But isn't that what Paul says: "keep this one marked and stop associating with him". There is no question of deciding whether to associate or not. Just that rather than enforced by elders, this will be an individual's personal decision to mark him, which he cannot enforce on anyone else.
These aren’t reforms…
Yes, these are just change of terminologies to match the terms mentioned in the Bible. The term disfellowship was never there in the Bible, and thus for outsiders shunning looked like a practice
which was not Bible-based. Now in courts you can just quote the scripture and tell that this practice of removing wrongdoers is directly mentioned in the Bible.