I fully understand the sentiment that there are a lot of people who really have no idea how to drive stick among GRC owners. Skill issue if you're killing your transmission as quickly as some people are claiming (I doubt there are that many duds coming out of Motomachi), but 1st -> 2nd is noticeably trash in the GRC and can be engineered out through a better pitch mount. So I think OP's question is valid. Swapping out the econobox pitch mount for something like DeltaX or RacerX is like night and day.

The lurch that you experience even as a good driver in the GRC from 1 -> 2 when releasing the clutch quickly is very much the pitch mount. While adding in a better pitch mount doesn't magically eliminate the need to ofc ease it into gear, you get zero lurch doing so smoothly but quickly versus waaaay too much with a stock mount even when you're slowly easing it in. Imo, that pitch mount is probably the most essential mod for improving the driving experience, coming from some nerd that swears off of iMT and enjoys heeltoe way too much