Mecha is a creature of life, following the natural laws of life cycles can easily reflect its two-sided nature. Isn't it about piercing the foggy window screen and waiting for the clouds to part to reveal the moon? One may just be looking for a better way. As the saying goes, practice makes perfect. Once you can operate a mecha, the rest is quite simple. Making progress is a gradual process that cannot be rushed.
Feng Yi claimed that he did have some skill level and could provide field soldiers with targeted instruction to help them improve more or less. As for how much they could improve, that largely depended on individual comprehension. He also emphasized that one of the fighters on Red Cloak's elite list was trained by him. While he may be weak, his professional instructing skills are second to none.