to continue what nursey was saying, when playing with rando or paddie, I have never noticed them taking away "my heals" more than any other gunboats soldier, for the most part. In fact, I felt like some gunboats pockets like b4nny actually took/take a significant larger amount of heals in certain situations than rando/paddie running shotgun, whether or not they got more/less heals on logs.
even though you inherently take more heals using shotgun, it's more about how you're actually playing. on top of that, if you're doing more because you're running shotgun, you aren't "taking heals away from your scouts." especially on maps like gullywash and granary, you aren't really taking heals away from scouts on that map as a result of you being on shotgun, as it's most of the time better to heal soldiers in close quarters. it's just that sometimes on open maps like process, it's easier to get 300 and jump around, making you play worse if you were on shotgun; you should usually (not always) run what makes you perform better as an individual. but i'll just mention, the only reason to ever run shotgun is if you actually have good aim and hit all of your shots, otherwise it's pointless, because you could've just reloaded a rocket.