That is pretty ridiculous complaint. Your problem is that they allow configuring instances smaller than your arbitrary baseline? Especially as AWS allows you to pick 2/4/8 GB per vCPU for general purpose instances. And the smallest of these (c7g.medium) is 2GB/1vCPU. The .5 GB t4g.nano has actually more generous ratio because it also has only .1 vCPU, putting it at 5GB/vCPU.

I'd assume they are very aware of demand levels for different types and would be adjusting the configurations if needed.