I don’t know if I can say the rest of this blah blah is true for all Sagittarians, but i can vouch from experience with my mrs that that the “wary of rushing into commitments” is a definitive element of the personality.
This is seen in all aspects of life… sort of a catch all buyers remorse avoidance … seen in any position where a on-the-spot decision is required, making or accepting a financial offer or even refusing to say yes to three marriage proposals due to “not wanting a divorce”.
It’s a kind of logic that only other Sagittarius’ seem to accept as valid.