In any endeavor there are gradations of seriousness, some real, others only imagined. If you are truly a serious audiophile, then you will have a professionally designed dedicated listening room, or two. If you have $100k plus in equipment and you haven't truly dealt with your room, then what have you really done? You can be a Ferrari aficionado without actually owning one, but you can't be a serious Ferrari aficionado without owning 3 or 4. There are times when being extravagantly over the top is appropriate and necessary.
BTW, I currently have two dedicated listening room, neither of which were professionally designed. In one I have no acoustically treatment of any sort. The other room has two bass traps. One room has the equipment rack centered and five feet behind the loudspeaker. The other room has the rack to the right side of the room and I have a 27" computer monitor placed centered and midway between the loudspeakers and the listening chair. The monitor has no negative effect on soundstage or imaging.
BTW, I currently have two dedicated listening room, neither of which were professionally designed. In one I have no acoustically treatment of any sort. The other room has two bass traps. One room has the equipment rack centered and five feet behind the loudspeaker. The other room has the rack to the right side of the room and I have a 27" computer monitor placed centered and midway between the loudspeakers and the listening chair. The monitor has no negative effect on soundstage or imaging.