Just out of curiosity, what constitutes a holy grail framework in your opinion? Has the holy grail of back end framework been invented? Is it ruby on rails or django? How about the holy grail of database engine, build system, etc.

I don't think there's exactly one way of doing anything, there may be leaders in some spaces but I doubt any of them are considered holy grails. Pick the tool that best fits the problem at the time and don't wait for a potential holy grail in the future.