I doubt you’ve come across someone who claims that all truth is subjective all the time in all scenarios.
I wish I could say I’ve never came across this sort of muppet. But… *sigh*
The example you give isn’t an example of subjective truth, it’s an example of wilful/conscious control of reality, which isn’t the same thing.
Wilful control of reality in this case requires truth to be subjective; and conversely, if truth is subjective you can control reality. You’re right they aren’t the same thing, but they’re clearly tied.
Someone on earth vs someone on the ISS have different gravitational experiences for instance.
The experience is different because the person in the ISS is simply not close enough to Earth to be subjected to Earth’s gravity, in any practical amount. But that doesn’t mean gravity stopped existing for them.
Grail@multiverse.soulism.net 2 hours ago
Imagine being this convinced that one’s understanding of gravity is objective truth, while also being this wrong about how gravity works