Huh? The plastic doesn’t get particularly hot on mine, nor does metal expansion cause it to get tight. At my current employer we have JBC, which is without doubt easier to hot swap. At the place I did an internship at last year (and which will become my employer soon), they have Ersa, and I didn’t have any trouble hot swapping on those, either. Sounds to me like something is weird with yours, because all of the ones I’ve used don’t involve “wrestling”, just unproblematic unscrewing, upon which the tip slides right off.
FYI, the special tweezers only hold the tip itself, they don’t help with unscrewing the collar.