I've read and reread the article, and this thread, and I don't really follow what's being complained about.
If, for example, I buy a table (whether I pay 10 bucks or 1000 doesn't seem relevant to me) - I think I have a reasonable expectation that it will function "as a table". If I put something on it that you might reasonably expect to be on a table, I'd expect the table not to collapse. If it does collapse I think I have a right to complain about it.
Yes, people need to take responsibility, in this case, the maker of the plant stand who has sold an item that wasn't fit for purpose. I'm presuming here that the vase in question wasn't "unreasonably" large or heavy.
If I buy a bunk bed for my 12 year old, and the first night it collapses, dumping him/her on the floor, I think I have a right to complain? child = vase, bed = plant stand - where's the difference?
If I buy a new car, I think I have the right to expect that the brake pedal will stop the car?
As for slamming your finger in the door of the cabinet - it seems obvious to me that that's a different issue - the injury wasn't due to a fault in the cabinet.
A plant stand that collapses is faulty.
All that said - what a stupid thing to do with a precious vase, but that doesn't excuse a faulty product.