The questions are good, but the answers are wrong.

Philosophy rests on wobbly foundations: interpretation. Philosophy is the ancestor of science. It doesn't work because it is made by smart people for other smart people. For example: look at Stoicism. It has been there for around 2k years, still you can find many bulleted articles on Medium on how to be the perfect Stoic. Look at the world around you: still the same shit for the vast majority of humans, and not so many Stoics.

Another example: German philosophy was the nec plus ultra a century ago. Did it prevent Nazism?

Hopefully we now have neurophilosophy, which rests on stable grounds (materialistic proofs). Still neurophilo is in its infancy and subject to interpretations, but sooner or later R.I.P old philo :)