I agree with that analysis, but my read is that not all the dislike is
only from people who stand to benefit (though that's a big part of it), but from a sort of intellectual/aesthetic dislike of markets that don't seem to be pricing commodities in a transparent/consistent way, and instead try to charge different people different prices for the identical product.
For example, your analysis could also apply to differentiated pricing of books. Some people are less price-sensitive, and would pay more if you could manage to charge them in a different tier: say, people buying books charged to their company, or to a university research grant. If you could do that, the base price for poorer people buying books might well be lower. But when Amazon experimented with per-user pricing based on analytics, people got really angry, as it seemed to be removing the idea that books have transparent prices.
Of course, there's often differentiated pricing by differentiating the products, even slightly: SaaS service tiers, limited edition books, hardcover v. softcover, etc. But when the identical product is being priced differently in an attempt to maximize profit in different demographics, it seems worse somehow, like a shopkeeper quoting you different prices based on how you dress (which does happen in countries with haggling-oriented pricing systems, but is contrary to the American expectation of advertised uniform prices).