> now let's imagine this matrix bot becomes a product, running on thousands of servers. the python version is 100x less energy efficient than the rust version.

> now let's imagine this matrix bot becomes a product, running on thousands of servers. the python version is 100x less energy efficient than the rust version. that 5 hours extra work now becomes a bargain. Not necessarily. If the limiting factor is network access, then the language you write in wouldn't make any difference. You could say you would use less ram with the rust version, but ram is cheap compared to developer time.