There are several tags I believe are incorrect with your intentions.

For race restriction, you should be using <whiteWeaponList>, not <weaponList>. weaponList locks that weapon to purely only your race can use, and every other race cannot use it.

With <hediffGiverSets>, you don't need the Inherit="False" tag because it never had anything in BasePawn to begin with, and you should have the <li>OrganicStandard</li> within it, as that accounts for the reaction to bleeding, hypothermia, heatstroke, and other chronic health conditions.

The <butcherProducts> is giving an extreme extra amount of leather and I don't think it should be like that. And it will be giving that amount regardless of the pawn's condition.
What you are looking for, is <LeatherAmount>125</LeatherAmount>, to be placed in the <statBases> tag. That multiplies with the baseBodySize by the way, which you can customise in <race> tag, although default should be at 1 if you did not input the value.

I am not sure how traits with specific degrees are targeted and if erdelf has done something about it, but <li>psychically deaf</li> in disabled traits may not function how you want it to as it does not target the correct defname of the trait.

Very promising and interesting race concept, and if you got any more questions, I would be happy to help. For now, I only looked in your alien race file.

Updated! Cleaned up some loose ends, thank you v much for your interest and the information tarojun.

I plan on introducing new surgeries (and associated thoughts) to offer the player some kind of reward for defeating drake raids, since they otherwise offer even fewer rewards than human tribals. Until then, I think the large sum of leather makes a good prize.

This only happens with this race but when I have a tiered robots mod, it makes these guys only able to be operated on with upgrade kits?