Yes this is my impression as well. From my (extremely limited) experience, I feel that as a startup you want to be working with tech/tools of 50-75% of the com

Yes this is my impression as well. From my (extremely limited) experience, I feel that as a startup you want to be working with tech/tools of 50-75% of the complexity that you are able to handle and work with. You (probably) don't want to be working right up against cutting edge unless you are very confident about it or your unequivocally an expert. Otherwise all the variance and errors that come with running a startup is just going to render your product/service/whatever unusable