Sure, there are two channel and multi-channel receivers, processors, and integrated amps that can do bass management well. Heck, I'm using the Paradigm PWAMP in one system (bought direction from Paradigm for $250USD) and it has full ARC that is adjustable to the nth-degree to do this sort of setup. It also has a built in crossover, that one can adjust to whatever crossover point makes sense after measuring one's room, and lots of EQ options, and a solid two channel amp under the hood.....
One can avoid the miniDSP completely if the subwoofers have variable phase and some PEQ (eg, like the SVS pro models, or many of the Rythmiks).....there are also other vendors, like
http://www.dspeaker.com/en/products.shtml that do some excellent work. And more and more, systems like Dirac and Anthem RC with some of their hardware are beginning to handle multiple subs and system integration in smart ways.
But skill and learning are required (eg, how to measure a room's response with REW) to knock it out of the park. And that is a HUGE impediment.
In other words, I agree, for a regular person, they are going to be flummoxed: They can spend 10k USD on a pair of full range speakers and get crappy response in room because they don't understand small room acoustics and how room modes work.
And they won't be ready to do the manual setup of something to improve things. The auto systems are getting better but they aren't there, yet, imo. There really isn't an off the self solution, whether one buys these speakers or one spends ten times as much, whether the speakers play down to 80 hz or 20 hz, or whatever.
It is an unfortunate state of affairs and a market opportunity (since the math and technology is not super expensive, just the knowledge and skill are tough) that hopefully will continue to be a target for companies in the future, and a place where incremental improvements will continue to happen.
So, for someone with the skill, these speakers are an excellent bargain around which to build an excellent system.
For someone without the skill, getting an excerpt to assist is worthwhile if one has the budget. This is one of those no brainer investments in my experience.....kind of like "my budget for speakers is $2k, why would I spend a few hundred of that on acoustic treatments and a few hundred more on a acoustician?" and my experience has been a well selected $1k set of speakers set up well in a good room can readily outperform $2k speakers in a poor room set up poorly.
And for someone without the budget and without the skill, well, these speakers would be nice but I'd probably go with the JVC. (Which, by the way, I also have in house, as my speakers for my computer setup, though I am using the powered monitor version. They are a seriously great value -- c. $200 a pair when I bought them.)