To further elaborate on the Space Mtn thing, that ride was originally intended to receive a full track replacement in 2008. Over 16 years ago. This plan was canceled. In 2013, trim brakes were added to the ride that significantly slowed down the vehicles and reduce the amount of strain it puts on the now ancient track structure. An attempt to squeeze as many extra years of life out of it as possible. Even though again, it was already well past its "expiration date" years prior so to speak. While a different type of coaster, DL's Space is yet another attraction that received a retrack during 2003-2005 (due to dangerous conditions that nearly caused an accident).
Again, BTM definitely also needs a full track replacement ASAP. Other versions of the ride (one of which wasn't even as old as the others) got it years ago. But Space is in far more desperate need right now. Not only is it uncomfortable, but the brakes they installed back in 2013 actually ruin the thrill and made it even more uncomfortable.
It is plausible that BTM is in worse condition however. Moreso than it may appear or feel. It's an outside coaster, whereas Space is inside. So weathering is definitely an additional factor there. Not just general wear and tear from use. Makes it all the more absurd that this didn't happen many years ago though, especially that other versions in far less extreme climates got the work done first.