Yes, walking downhill for some time almost feels the same as wearing a higher heel than you actually are.
That's definitely a progress! I feel that too.
Quality and fit is very important, especially in these heights. I can understand that you don't really have motivation to wear these.
Yes they're very well made, for sure can't complain about that. The downside is that they're very sturdy and take a long break-in period, and the toebox is very tight. So not a very comfortable shoe in general, and if you add the 130 mm heel even less 😉
But I'd always choose them over some lower quality ones with a looser, more comfortable fit. They might feel more comfortable on the first try-on, but definitely not while walking.