I don't read anything 'racist' in his comment at all. He just linked a YT video, nothing more. I believe you are being way to abject in your comment. Any production welded part can be defective. I've fixed numerous mis aligned and poorly welded Kubota assemblies that were improperly welded in Japan or in Georgia that were made for Kubota tractors in as much as I work part time for my Kubota dealer and I always fix those screw up's in my welding and fabrication shop.
In fact I just rebuilt a 'H' section frame for a bucket (parallelogram linkage) for a Case extenda-hoe. One of the ears was broken off and I beveled the broken off part as well as the mating part correctly (it was 1/2" thick, mild steel plate and the spray arced it in the shop, clamped to me welding table to insure correct alignment. After I welded it up, I returned it to the owner, who promptly bent it (it didn't bend where I welded it but in a different spot because the end of the dipper stick was already twisted and the customer didn't realize it, so I not only get the H weldment back to repair, I also got the entire unit to fix the twist in the end of the dipper stick as well.
Matter of fact, it's sitting in the side yard presently to be repaired. I did my job originally, but the customer didn't realize the end of the dipper stick was also twisted (the where the end of the stick was, the weldment is also not only twisted, but cracked as well.