I'm from the US grew up in the Valley but lived in the UK for a startup for a short while. It's both a byproduct of career hierarchal corporate obedience and social success façade (see also: modern campus culture of Ivy Leagues and Pac12s). It's absolutely awful for mental health or getting things done.
More practically, it's a problem when people try so hard to be liked that they throw away respect by being too "nice." As such, they're not your friends or anyones friend, they're toxically-positive, inherently dishonest, and cowardly "yes men." It's a dishonest, time-/energy-wasting, and an untrustworthy cultural- and communication-style. People like these are a liability because they won't go anywhere far except to the diplomatic corps parties, UN-sponsored social ventures, and sing Kum ba yah. (Wantreprenuers and dumb money dispensers.) You have to be radically honest with yourself and others before you can attain and grow anything substantial.
Besides, VC investment is only essential if it's a capital-intensive venture or velocity-constrained by lack of capital. Having more capital isn't useful in and of itself without a plan and a strategy to deploy it to something that's already established, like water on a seedling. This is why chasing VC is worthless: sales of viable product cures all, including bringing VC interest.