Remember that ABL is not necessary on a machine with a decently level bed and good manual calibration
So far I agree. My steel Createc i3 does not vary at all, even when removing the glass, cooling overnight, reheating, putting glass back on, etc.

I think silicone thermal (Gino) pads (no metal clips) allow the glass to set, heat, remove, and generally just be independent of the bed's contractions. That, combined with rock-steady frame (steel has half the thermal expansion of aluminum), means that the nozzle height just does not change.

So, so far at least, no ABL for me.