In real world and in real living (not a specially prepared for listening) room in this world in the average case, improvements will be highly questionable.
You can think of it as a form of entertainment, you can think of it as a marketing tool to increase sales and increase the cost of equipment.
But it certainly cannot be considered a panacea, no matter what anyone writes on any forums.
Perhaps all these tricks are good for near-field monitors that are used in professional processes in prepared studios, but no miracle happened with my floor standers (and nothing happened at all).
So far, my personal experience is this - you play with the DSP in a "room treatment" for two weeks, then the DSP is disconnected from the audio path and collects dust as a confirmation "I tried to follow the fashion" (and that costs money too.). Of course, you can leave the DSP, but there is little sense in this because the result is very poorly tangible, and there is no particular need to further "break" the already dubious quality of some digital original.
It is much more useful to find what in the room rattles from powerful low frequencies and rings from intense high frequencies. Sometimes that doesn't help either. For example, in my case, the bass of my speakers just "rock" the sofa, but I removed all the other overtones using the simplest methods (and still, something sometimes "rings" inside the TV).
The simple sound absorption where it gives an effect is much more useful (this depends on the specific room and is achieved only through trial and error, some highly scientific calculations and even FEM are probably possible, but the time and effort for their implementation are not acceptable for the task's essence).
I think so.