Agree. And it is no good. Curious related article: Kaizen vs. Chabuduo: Changing Asian Quality Culture.

Nothing new. By the way, cylindrical cells are not manufactured with button tops. And they are welded. Your bad experience, toobadorz, with button tops is due to shoddy work.When a button top is properly welded it works very well and without issues. Here is a picture of a 18650 cell from which I removed the button top to take a peek at its actual flat top; I still had not fully finished the work, you can see a leftover dot by the left:

I could count a total of six (dual maybe) welds around the button. I first had to use my rotary tool attached vertically to a vice with a milling bit so I could slide the cell flat under to remove the bulk of the button top, then proceed with some hand finish work with a grinding stone. That @#$% was not meant to break up easily!

Cheers :-)