Their QC doesn't seem to be much better than Ltwoo, really, so not a huge advantage over Ltwoo really at that price.
The advantage is neither pricing nor QC, it is compatibility with basically any cassette no matter the gears and "AXS-style-shifting-with-easy-to-bleed-non-DOT-brakes"
Something you neither get from LTWOO, nor Shimano, nor SRAM, nor anybody else.
This obviously doesnt mean QC isnt important, but GeX brings much more -at least on paper- than "just another cheapish alternative only worth considering when not able/willing to pay for big brand"
But in reality, it does and people are concerned about the possibility. Shimano's Di2 approach (and the LTWOO eGR) handles this with a large battery so it's really unlikely you will wear it out while in use.
In reality it acutally turns out to be the other way around... if starting full, both systems a very unlikey to run out during a ride, but a small battery you routinely charge at the end of each day/ride is much less likely to be forgotten / not charged in comparison to a very large battery where charging is only required once every few month or so.
I basically never forget to charge my smartphone over night, connecting it when going asleep is a routine like tooth brushing.
But I actually tend to regularly forget charging/changing batteries on my digital scale, tv remote, wallclock, etc. just because of their long run times.
And more significantly, you forfeit the reassurance of being able to carry a spare. With AXS, I can easily keep a spare in my pack or swap batteries on a 2x if I run out while riding.
Or in other words: with AXS you
need an expensive seperate proprietary battery in your pack (which then can only be used for your AXS derailleur) while with GeX you could just use the same cheap and widely available USB powerbank which you are very likely to carry in your pack anyways (because it is used for your bike computer, bike lights, smartphone, etc.) plus a probably cheapish and very light/small cable.
