Agreed 100%, but as you said some folks like ketchup.
We can view it as a waste of what was originally offered but at the end of the day it's the satisfaction of the consumer that matters. A good case in point is a family member of mine that loves music almost as much as I do, but they don't invest in anything that would be remotely considered high end for listening. I did a blind test many years ago trying to prove that I wasn't nuts for preferring certain cables over others (at the time Copper vs Silver vs. Carbon Fiber). They could hear a clear difference just as I could but they preferred the cheap out-of-box vanilla copper cables. I could argue how the silver had much better high end and clarity (though too much for me), or the carbon fiber was tighter and more neutral (imho) but the thing is for the aspects I knew they liked in most music types that didn't matter. Yes the cheaper cables subtley filtered the audio, to me lowered the quality, but it was in a way that was closer to what they appreciated. At the end of the day they enjoyed listening to the tracks as much as I did, just for different reasons.
Now we can argue the quality of EQ, Linear Phase and so on, but that's just the means to an end. If you use EQ to achieve a sound you prefer over non then don't let that little voice of doubt destroy your listening experience. Yes it's muddying it sonically, no it's not what the source intended, but it's yours now and your ears are king.
BTW I'm kinda playing devil's advocate here. I don't process audio on my main listening rig at home, all colorisation is from the physical components in the mix and not logical meddling.
But on my PMP I do make use of EQ and BBE to make the sound more enjoyable in non-pristene listening environments.