Your link doesn't seem to have pointed to where you intended. It just took me to the top of this page. If you give me the post number, then I can look it up.
As for disrespecting the lore, I can only think of four things worth potentially getting upset about:
1. The characterization of Luke
2. Democratization of the Force, rather than focusing on the Skywalker "chosen one" theme.
3. New Force abilities
4. Yoda essentially burning down the Jedi legacy
My response to these four issues are thus:
1. Lucas already established the precarious nature of the Jedi in earlier films, how they're constantly walking the balance beam between the light and the dark, between virtue and corruption. They are not meant to be avatars of moral perfection.
2. Skywalkers aren't the only ones who get to be Jedi and never have. There are all kinds of different Jedi in the prequels. A whole Jedi army rushes onto the battlefield in AOTC. I'll grant that this nullifies the idea of of the chosen one who will come to balance the Force. But with Luke handing things off to Rey, he is returning things to the pre-Skywalker state. I don't have a problem with that, because it seems to me, it's either do that or fulfill the prophecy, balance the Force, and boom, Star Wars is over. I any case, the Skywalker blood actually still lives within Kylo.
3. This one's easy. We talked about it before. New Force adepts find new ways to use it through continued practice and experience.
4. I could see fans getting pissed about this. It made me slightly uneasy as well. But Rey did save the sacred Jedi texts, and I think Yoda's message was essentially: "Don't mistake the artifice of the Jedi religion for what it's really all about. Don't miss the forest for the trees."
Your thoughts?