Kim Petras should not be stomping around in high heels of any sort. Especially with that stupid cat walk model strut, where models twist their legs and slam their feet down in stilettos. He should be in very carefully designed orthopedic sneakers, and be barefoot as much as possible. With bare feet he could place them more precisely as he needs to.
And yeah, in order to "pass" HSTS TIMs have to stay as pin thin as they can to minimize their natural boxiness. But castrated ones have great trouble doing that. Obesity has always been a well-known side effect of castration. It was very common among eunuchs. The beautiful "blue eunuchs" of
Arabian Nights were always a fantasy. A lot of them were ginormous in a time where obesity was extremely rare, even among the wealthy. If they wanted a dainty pop star, they shouldn't have cut Kim. They should have just starved him.
They also should have just looked at him pre-surgery to see if the blockers and cross-sex hormones really made him pass. If they had they wouldn't have bothered with penile inversion. You can see in his "I don't want it at all" video that he doesn't fully pass. His hips are so narrow he's got this pot belly, even though he's thin. And his legs are just so male. When he dances with Paris Hilton it's even more obvious he's a dude. Poor thing.