Well said.It really doesn't matter. Clearly there are those who don't want any new Trek that "contradicts" what they know to be "true". Just as there are others who don't care and still others who actively want the changes to become the new standard. These various viewpoints existed prior to the movie and would still exist if the new movie were just a proposal at this point, rather than a practically finished product.
Ultimately, it's about what the owners of the artistic endeavour wish to do with their property. It belongs TO THEM. We are NOT entitled to be satisfied with their choices, we are only entitled to express our opinion of them (verbally and with one's wallet). The current "powers that be" have settled on a particular approach and there is nothing we can do about it. We can choose to see or not see the film (and we are free to think whatever we wish of it). That's it. We don't own it. We're not owed anything (not even an "explanation" of why things are different).