> Your code might contain some basic security errors that you would have avoided had you gone with a stable, vetted framework
On the flip side, stable and vetted popular frameworks also have security problems; and although these problems may be less likely, they are more bad people trying to break them, because when they do, the win is really big. E.g. Windows vs Linux viruses / trojans - I'm not sure if Linux is so much more secure to justify the difference.
Also new tech stacks typically evolve faster and are quicker to fix bugs. It is much faster to fix a problem in a young, less complex product, without having to deal with things like technical debt, backwards compatibility with millions of apps or endless discussions between committers about how it should be fixed.
