I don't really understand your negativity. I agree it's impossible to help everyone. But what could be the possible downside to trying? Why is idealism a dirty

I don't really understand your negativity. I agree it's impossible to help everyone. But what could be the possible downside to trying? Why is idealism a dirty word these days? I mean it is the idealism that motivates him to do this in the first place, if it turns out the raspberry pi motivates a few kids to become great engineers/inventors/scientists, that's great right? Would it have been better if he was cynical about it?