yeah totally, it's probably a fruitless task tbh. I mean even in Tai Chi alone there is a lot of debate and disagreements within the community as to what it is, how to practice, what authentic Tai Chi is etc.

In fact even within the Yang style there is not as much consistency as you might hope.

And I think the same is true of Yoga from what I have seen. Both traditions are large and diverse however I do believe it is still possible to find the essence of whichever art you practice if you are sincere and put in the effort.