Yeah, and maybe you should have read my post more carefully, genius. Because honestly, it certainly looks like what I was saying went right over your head. Did you see me mentioning quarians, krogans, or any other ME aliens at all as being examples of convergent evolution? No, because every ME race was designed by a human artist and is not an actual example of convergent evolution.
Actually they're quite good examples of convergent evolution. Bipedal gait, mostly similar internal anatomy (heart, blood vessels, lungs, stomach, nervous system, etc), a complex brain, two eyes, one mouth, two ears/hearing organs, one nose with two nostrils. We don't look this way because of random chance, we evolved all of these traits because they are the most energy efficient to support our complex brain. The same would apply for any alien species comparable to us in terms of intellect and brain complexity.
Convergent evolution doesn't cover the smaller details because they're selected based on variances in environmental conditions, mating behaviour, social behaviour, hunting methods in response to the evolutionary path of other species from the same biosphere, foraging methods in response to the availability of plant-based food, resistance to toxins in response to exposure, etc.
So while you're right that the ME species were designed by human artists, these artists put some thought into why each of these species look the way they do based on what we know about our own evolutionary design and that of different extant and extinct animals like dinosaurs. They go into some detail about this in the ME Art Book, which I have lying around somewhere.
Besides some artistic design choices like asari being virtually identical to female humans save for their scalp and skin color, the only thing that really stands out as evolutionarily nonsensical is their decision to give so many species three-fingered hands. We evolved five-fingered hands because they have the best ratio of usefulness to energy efficience. Three-fingered hands are much less useful than five-fingered hands and, IIRC, aren't noticeably more energy efficient.