I too love and enjoy Petipa ballets in particular,, Niemerier(spelling),Sir. K. MM, Cranko, Vinogradov Lander, Lifar, Balanchine, Petit and others and feel there is technical quality in LFMG, albeit perhaps more simple? I just did not find the other Lise Solo, appealed to me, perhaps I am too used to the Royal Ballet production. I find the music is different as well.
The key to this is that we tend to not like a different version of what we have grown up with and know well.
This is why nobody is happy when a movie comes out based on his/her favorite novel. The story we have in our heads is vivid, and nobody can put it on screen the way we think it should be created. 95% of people watching a movie version of a novel are going to be very disappointed. The new version is always going to seem like sacrilege.
It all depends on what we knew first.
I have watched both Ashton's and Gorsky's versions recently and love them both for different reasons, but that is because I am not invested emotionally in one above the other (did not grow up seeing one that touched my soul). But someone who has grown up watching one or the other is going to think the one he did not grow up with is "wrong" (for lack of a better word). It makes sense.
People like what they know and aren't usually thrilled by new versions. I'm not saying that is good or bad. It is just human nature.
But if you are a true lover of the genre, you can still appreciate a different version of the original, it does not mean you altermatically will prefer what you have enjoyed for years. Sometimes it can vary your preference stays with the old favourite. But at other times the new or different version can equally meet or surpas your original feelings. With me take the case of the POB 2 performances of Berlioz Romeo and Juliette by Sasha Waltz, danced by Aurelie Dupont and Herve Moreau also Melanie Hurel and Nicholas Paul in 2007. I was totally swept away by this, Modern dance - me !!!!!! ?????. It was quite beautiful in it's own way, with choral support and the most simple effective choreography. and there was a beautiful Pas deux, I really love it in fact it was so emotional it reduced me to tears. Over the years I have seen numerous R & J's, some I liked others I did not. But this new work I could happily accept.