Can pistol optics plate screws be reused?

We've seen evidence that would seem to support the feasibility of reusing the RMR sight to plate screws, as well as incidents that indicate otherwise, there are variables so I recognize these aren't apples to apples,  straight forward, direct comparisons, definitive conclusions would be hard to come by.

Variables:

The screws plate manufactures supply can and do vary in hardness and drive size.  Mild steel screws fare poorly against 18-8 stainless steel screws of the same tensile strength, alloy steel screws are more than 2x the tensile strength.  We've standardized our Glock RMR sight to plate screws with specs the supplier must follow, this removes the screws as a potential variable.

The amount of torque applied, we can never be sure if the users have used a torque wrench and if so, we don't know if their torque wrench is calibrated.  If hand tightened, all bets are off.

User's skill in installing and torquing the screws.  This seems and is a simple thing, everyone knows how to turn a screwdriver but not everyone does so properly.

Plate design.  Whereas with our plates, the sight to plate screws usually (not always possible with all the sights, but certainly with RMR, RMR HD, SRO, DPP, etc.) don't handle the recoil since the plates are able to hold the sights tight, no recoil is transferred to the screws, if a plate is unable to hold the sight immobile in recoil, the sight will beat up the screws and eventually loosens them.  With Glock OEM plates, it's advisable to always replace the sight to plate screws as they'd usually become unreliable by the time a battery change is necessary.

Our opinion is what many agencies do, which is to replace sight to plate screws when the armorers replace the battery, is cheap insurance, better safe than sorry prudence.  6-32x3/8 T15 alloy screws are COTS on McMaster, we often just supply the part number to the agencies instead of them buying them from us, some prefer to buy from us for administrative reasons, but because of the standardization, they'd be the same specs regardless.