Any in many ways, that is the way engineers should speak to other engineers when analyzing a problem.

If two or more people can actually share a common goal of finding the best solution, everyone involved should be making sure that no time is wasted chasing poor solutions. This not only takes the ability to be direct to someone else, but it also requires that you can parse what others are telling you.

If someone makes something personal or takes something personal, they need a break. Go take a short walk or something. (Linus is a different sort of creature though. I get it.)

TBH, this is part of the reason I chose my doctor (GP). She is extremely direct when problem solving and has no problems theory-crafting out loud. Sure, we are social to a degree, but we share many of the same professional mannerisms. (We had a short discussion on that topic the other day, actually. I just made her job easier because I give zero fucks about being judged for any of my personal health issues.)