[Jenk]

> But all else equal

This is the point GP is making - they (the "junior-wannabe-senior") aren't even thinking of all else, and by focussing purely on the speed of operations are probably using the lesser optimal solution. Facetious example: A is faster than B, shaving a few cycles here and there. But nobody knows how to use A, it's support is lacklustre, and there are many known vulnerabilities that haven't been fixed. B is the most widely used in the industry, support and security is good. Junior-wannabe-senior is picking A because it's faster.