I see many of these comments as criticisms of superficial implementation details, that don't necessarily indicate opposition to all variants of the Founders Visa idea.
Comment votes, top-comments or even prevalence of critical comments are not reliable indicators of net agreement/disagreement. Threads have lots of factors that cause criticism and disagreement to be over-represented, or cause quibbles to be misinterpreted as opposition.
I myself would criticize the 'investors panel' mechanism because I support the overall gist of any policy to increase founder immigration. Sure, I understand bokonist's critique and I'd prefer saner non-political mechanisms for boosting beneficial immigration.
But given that immigration policy will continue to be a bureaucratic mess -- there's no 'grand fix' proposal on the table as an alternative -- even a flawed program could be worthwhile. All the existing 'doors' through which immigrants enter are politically-flawed; why not have one more door, also admittedly flawed, through which a few more valuable immigrants might enter?