This may have an effect on some level of stress/consistency, but I “think” the amount of bearing surface or clamping force might either cancel it out or make it extremely difficult to determine the exact change in flex/compression of parts.
Kinda like steel rings on an alloy tube?
Who knows, perhaps this is yet another area fliers sprout from

Seriously not blowing off the concerns, as I have approached this line of thought on my own precision rifle set-up.
Steel rail to steel receiver cause while they are likely different alloys, hopefully they will be close in consistent response to temperature and stress.
Aluminum scope in unitized aluminum scope rings for the same reason.
Unitized aluminum rings to steel rail to limit the amount of stresses to a small point of contact.
Maybe it’s all about confidence in your choices?