Condescending Mech Design

Mechs didn't possess genders.

Hardly anyone even thought about it. Regardless of whether a mech pilot was male or female, they piloted a machine whether its dimensions resembled a male or female form.

Most mech designers defaulted to a male form when they designed a humanoid mech because that was the optimal standard in most cases.

Of course, some mechs designed to be slim occasionally looked feminine, but that was ordinarily not a major issue to male mech pilots.

These users cared a lot more about the condition and performance of their mechs rather than their gender.

Masculine mechs were generally beefier and tougher while feminine mechs were often slimmer and faster.

This was not a hard rule, though. Plenty of mech designers developed female knight mechs and a lot of light mechs strictly adhered to the masculine form.

In short, hardly anyone in the mech industry cared about the gender of a mech.