A more parsimonious explanation is that this term got more-or-less randomly boosted by the reinforcement learning loop because there was nothing in the training data to discourage its use.
It doesn't "decide" anything or "need" any semantic. It derives the likelihood of the token, and "bearing" is likely to come after "load".
Unfortunately, we're starting to now.
Thanks to Claude.
There are lots of ways to express an idea besides this one trendy construction metaphor
The point is that if you want to remove it or change it, you need to put something else in place that handles the work it is doing. So it is more that it is serving a required/necessary function, without being any of those other things in and of itself. It's more about "be careful when changing this."