Well this may be a few months late, but I also own a Twitter gravel v3.
I think the crux of his comments is more of how the bike handles and the v3 actually has pretty aggressive geometry among gravel bikes, with a lower stack.
The frame internals might not be the cleanest but the key thing is everything works well. I have had the frame for over 2+ years and numerous equipment upgrades and so far it has not let me down.
My current iteration with Magene QED power meter, sroad cassette and ltwoo ER9 is 8.2kg
Not too shabby for a full build which originally cost us$1000 shipped from china.
Imo twitter is one of the best value deals if you are out for a cheap reliable bike.
Their new R12 is also available for us$1100 on taobao with wheeltop eds tx shifting. Doubt anyone can beat that kind of value.