Precision voltage reference divider vs. constant current source to drive an RTD sensor
RTDs are non-linear so let's just say that using a resistor to feed it adds a bit more non-linearity you have to cope with. But if you are feeding the RTD signal to an ADC then it makes sense to tie the top of the resistor to a reference voltage that is also used by the ADC - this is called a ratiometric measurement and, to a significant extent that voltage reference can drift this way or that without numerically affecting the ADC conversion number.

Using a current source may make things a bit more linear but you lose the benefit of a ratiometric measurement.

Using three more resistors to make a bridge isn't worth the hassle in my opinion - that's three resistors that have to be precision instead of 1 and any quarter bridge circuit will be non-linear anyway.