Because it's their experience with how the EU is run. These top level commenters you refer to don't want to waste their time with the specifics is the proposal because they believe that these initiative is a poorly managed redistribution of tax money.
I don't think VC system is good, but I'm tired of going in to EU calls to only see there's actually no money for start-ups but it's often earmarked to keep big EU companies afloat and competitive. This is in itself not a bad thing, pretty much everyone does it (US military industrial complex for example). So I accepted these as money injection to big business rather than expecting it to tickle down to small businesses or start-ups.
On start-up funding we have a systematic issue of European wealth going to US for investment and EU start-ups going to US to find investment. These EU money injections doesn't solve it imho.
