Most rooms don’t need acoustical treatment.

Why?  Because acoustical treatments presented are in virtually empty rooms. Unrealistic.

Not sure if you are making a statement or advising others. But you have also provided the reason why they are not needed, as it depends on a case-2-case basis. Yeah, your room is furnished and does not need treatment. My room is purpose built and was empty to begin with. A simple change in moving couple of treatments made profound positive changes in my case.
BTW, most forums also don't need duplicate threads. You have another thread on the same topic. Might want to remove it.

@patrickdowns,I have to agree with you.OP is clueless. But I think he is new on the forums and might be trying to "get attention".

Roger that. A quick search of the topic here would help him/her. I just searched "Jim Smith" and got lots of hits:

https://forum.audiogon.com/search/index?utf8=%E2%9C%93&query=jim+smith

jumia - Member since Jan 04, 2021

Is this yours @milpai?

Are you happy with the GIK panels and bass traps? I am waiting for their designer to get back to me with suggestions. This is a well-sorted out room. I probably have too much stuff in mine (bookcase, computer desk in the corner) but it’s my man cave too!

https://systems.audiogon.com/systems/4220#&gid=1&pid=1

Lamps on end tables reduce room modes.

Sums up the understanding of acoustic treatment 
some are commenting on.