still not sold here. your analogy is misconstrued because those separate roles cannot be performed by one person in the first place whereas AWS is simply a matter of reading the documentation and building a knowledge of its architecture which compromises of many interconnected products. This is just how lot of enterprises function and AWS reflects this.

If you are starting out in AWS and you are overwhelmed its understandable but the if barrier to entry to Vercel is much lower you are not going to be differentiating yourself in the job market either.

The cost savings in the long run of having good AWS knowledge is always going to shine over whatever short term cognitive lift perceived by inexperienced AWS devs.

I would actually put Vercel in a lower tier of cloud practioners. For startups, that might be just what you need since there is a 99% chance you won't ever hit its unlimited tier limits (hyperbole).