Explain to me, how is Bitcoin Unlimited being disrespectful by using the open source code developed by Core while at the same time developing new open source solutions to scaling Bitcoin directly?
You claim implementation superiority without giving adequate amount of credit to the people who did most of the work. This might be just a subjective opinion, you're free to disagree.
If anything the entire Bitcoin community should thank Bitcoin Unlimited for these breakthroughs in the same way that I can thank Core for the work they have done.
No, we shouldn't. If you claim that they're breakthroughs, that doesn't make them such. I'd like to see analysis from a 3rd party first before giving any credit to anyone.