Yep, pretty simple really. If it works then only it can be called agile. E.g. we sacrifice goat everytime story is complete and human when an epic is completed successfully. It has worked so well for us. So I am gonna call it Right™ way of doing agile.
I am happy with that so long as you : a) do not try and make other people kill goats, and b) do not insist on stopping the other team that likes to shave its hair after every show & tell because that works for them.
It's cool if some people prefer to shave their hair, while others say that this goats business is silly anyway and better be skipped; but then they shouldn't claim that they are the followers of Right(tm). It's only fair. Whereas you can hear people claim that they are doing scrum, or even develop a strong dislike to scrum without actually doing what's in the scrum guide.