Less a matter of "heated", more a matter of "heated RED HOT and then QUENCHED".
There's all sorts of stuff that can be heated enough to loosen a press-fit, but rarely oil-quenched. Connecting rods get heated to cram a press-fit pin into. Sleeves get chilled, blocks get warmed in an oven to slide the sleeve in easier.
And, yeah, even that sort of stuff can be over-done.
No reason at all to heat a control arm red hot in order to stuff a ball joint into it. That's why ball joint presses were invented.