No. The OP learned after posting that the room really matters. The reason why the size of the main speakers is less important now was discussed at length. Your quote:
Implied that the two are equal and you can just "trust the speaker manufacturer" (whatever that means) instead of buying a sub or two. The second does not follow the first, there is a breakdown in logic, thus, nonsequitur.
In an open field, sure, the sky is the limit. But we have to work within the reality of rooms that create bass soup with extra chunky standing waves. The subs under your speakers, as good as they are, are stuck where they are best working as speakers. My subs can be placed where they work best, giving a better-sounding system as a whole for all content. I'm pretty sure that point has been repeated a few times here. Going from my two sub and standmount speaker system to just towers would be a downgrade in sound quality, and I value that more than the space I need for the subs. And I would end up spending 5x as much money.
Its main selling point
. And don't forget the included 1000w amp so I can run my system off of an AVR with all the bells and whistles without extravagant extra gear.