It is not getting much attention. It is you reading too much hacker news.

Soylent is affordable. Many other complete food supplements which are primarily used by hospitals and other care facilities, will cost significantly more. Other than that, it's a "fun" experiment as it has not been clinically proven to be either healthful or harmful, though the ingredients are FDA approved.

Soylent is $65 for 21 meals

Jevity is $40 for a case of 24 cans http://www.amazon.com/Jevity-1-2-Cal-8-oz-case/dp/B002HQMBZM...

To be fair, I believe you wouldn't have an entire diet based only on Jevity, while that's their goal for Soylent.

Can you name 2 or 3 (1?) that are marketed for 15-20 meals per week? Ensure Complete (but not any other versions of Ensure) is sorta close but marketed as a supplement.

None are marketed for 15-20 meals because the manufacturers know it's not feasible. It's quite different with fundraising, where you can claim whatever you want since it's all still fantasy.

OP wrote "plethora of well known and well researched meal replacement solutions out there"

I'm just wondering if OP can name even one such solution.

The Soylent founder is a former YCombinator founder.