> An engineer's impact on a single person might be low, but at scale, it can add up to a lot.
> As noble as being a doctor is, their individual contributions can never scale beyond a few people.
Nonsense. If you only scale into saving hundreds of users a few minutes each, you're maybe approaching one lifetime, and that's assuming that your time saving actually improves those users' lives. The vast majority of engineers don't scale beyond that.
Meanwhile, some doctors absolutely make contributions that scale, such as finding cures or vaccines, preventing spread of infectious diseases, or discovering ways to detect diseases earlier. Looking at percentages of world population, the black death killed more people than any of the FAANG companies have users, and that's only one of the diseases cured by the discovery of penicillin. If antibiotics resulting from penicillin didn't exist, it's quite reasonable to guess that more people would die of bacterial infections than FAANG has users.
The smallpox vaccine? A test for detecting HIV? Quarantining the Ebola outbreaks? Each of these saved millions of lives.
And let's not forget that the highest-scale engineers are pretty hit or miss as far as whether the way their work touches lives is even positive. Big pharma isn't innocent, but I don't think anyone would argue we should get rid of them entirely. In contrast, it's pretty unambiguous that the world would be better off without Facebook, and each of the AANG companies has some pretty large negative effects on i.e. small businesses, worker rights, attention, privacy.
In short, you're just comparing the highest-scale engineers to the lowest-scale doctors, and assuming that what engineers are doing is as positive as what doctors do.