This is now the case for all reports on the community report site. Naturally it didn’t and won’t apply to the old forum which is no longer active.
Every report that is closed, fixed or rejected receives the developers response directly.
If they have the acknowledged tag, it means the Devs have not come to a conclusion or found sufficient evidence to yet support a change or outcome. It may well be they are conducting their own investigations, and this naturally takes time.
If something is “not a bug” that’s because it’s either A) as intended by the developers or B) doesn’t meet the requirements to be accepted. In both instances, it should be explained why that is.
I’m afraid I can’t provide up to date commentary on a report concluded over two years ago. It’s better a new one is submitted with new materials if there are some to better clarify the information.
The latest report does not meet the minimum baseline (it just has two videos), hence why it was rejected.
Once again, this minimum criteria is set by the developers as the absolute minimum requirement that can actually be practical to maintain without opening the floodgates to a flow of low quality reports aiming to change everything based on video statements.