Should Speaker Manufactures provide a Frequency Response Graph?

"Nope.  I buy speakers based on my hearing, not a graph made in a testing lab."

This! I agree completely.

"The full measurements that the kipples spit out are super valuable. " In what way? Do these measurements tell me I will like what I hear? No! I am not an ASR minion that needs to be told whether a speaker sounds good or not.

"As engineer for 20+ years I can assure you 99% of the high tech things you use (or even keep you alive, I work in the biopharmaceutical industy) (sic) were build or designed using models."
I do not doubt this, however I do not need to know and am not interested in measurements; I am interested in how they sound to me and whether I like that sound.

"Some of the responses here display the anti-science attitude which I find very frustrating in this forum." - see my comment above.

"Why would anyone want to look a Porsche 911 specs or its track performance? "

That is precisely the point. Why do you need to look at 911 specs? We all knowit is a great car.