Yes and they aren’t unquestionable. YC released the SAFE and then a few years later, after working with thousands of founders, thought it was too confusing to

Yes and they aren’t unquestionable. YC released the SAFE and then a few years later, after working with thousands of founders, thought it was too confusing to have a feel for ownership and conversion with pre-money valuation caps, so they moved to a post-money SAFE. The SAFE itself has a few variations and you’re welcome to add/remove things as they make sense. With more complicated legal documents, like a Series A raise, of course people should adapt. Open standards are a starting point.