I'm sure that's because most addons are using default systems so get this "for free". I imagine the developer just didn't consider someone using a setting that seems made for turboprops not jets (it has "beta" in the name, and forces you to have a beta range in the curve, even if it's tooltip mentions jets, no-one looks at tooltips, including me until now...). But if I can figure out how it works then I can request support. No promises.
As such, how did you get the second column of numbers to change? Every time I do it resets to 0.17, 0.33, etc. Don't worry, I figured it out and it's messed up, stupid X-Plane. But I still can't figure out how this is meant to work on the backend.
Of course it can but it's going to take custom support because this addon isn't using any default LR systems unlike every other addon in X-Plane.