Oh it's definitely not Topton-specific, they all do the same thing trying to let the window expire. Same with the confirm delivery thing where any vendor will try to get you to confirm delivery before doing anything else. A lot of white label ODMs really don't have much to gain from supporting individual customers since the market is so extremely large and highly unlikely to have any sales impact from not supporting anything/anyone.
For this very reason, if you do commercial installations without a local distributor, order spares for everything. It'll still be cheaper and more versatile in many cases, and when the contract allows it's also a much better result for all parties involved vs. some low-end cisco/otherbrand offering.
Normally all of this would be handled by the locally responsible distribution party and because they may only have a potential market of a couple of tens of millions of customers they really do have to work a bit harder and comply with local laws to deliver a product that works. But in China, your market is both locally a quarter of a billion of potential customers and then there's the neighbours that might not have that much of a high bar to set (mass markets like India have a ton of potential customers) that add on top of that. In a nutshell: when you are volume-based and your volume is one or two orders of magnitude bigger than the competition you really can ignore your individual customers. Especially when no consumer protections apply.
Back to the topic at hand: if AliExpress can do their whole dance around the dispute window but allow you do file one, you are likely going to have to ship it back because that's what the 'manager' sometimes feels like, regardless of what the ODM wanted. This isn't a big deal, but sending stuff take forever if EMS is going to handle it. With Qotom I always use DHL because it's simply not worth the wait to use some slow delivery service. With KSGER (different products) it matters a bit less and I often do take the cheapest option because for me, it's also just cheap volume that matters, and getting 20% DoA really doesn't matter if you simply order twice as much as you might need.
This is also reflected in their weird UEFI setup, they just get the default bare-minimum Aptio/AMI/Whatever IBV toolkit, make it work "just enough" and leave everything else on 'enabled' just in case something might ask for it in the future, even if it doesn't do anything. Technically, they are not wrong to do so, locking down and smoothing over the firmware really doesn't make the product better considering they are industrial use cases and besides signage, networking and data aggregation (the models with 6 COM ports) they really don't target other uses. Some vendors default to "no video" and "boot on power" because they know that 99% of the time the units will run headless and this gets them closer to mimic name brand devices that are ten times as expensive without doing the work. Downside is that you get a lot of people complaining that the device is DoA because the HDMI port doesn't work, and only if it happens a lot they'll modify the defaults and publish a BIOS update in some obscure place with a download speed that reminds you of 1995.
But even with all of those drawbacks, if you just order a handful of units, or if you build your own process around it and bulk-order them, it's still a very good choice. When you are in between those points (one or two crates of units, with perhaps some config variations as well) the overhead of getting it to work the way you want it in a repeatable way is going to be a pain in the ass and then going back to your classic HP/Dell/Lenovo vendor might be the way to go. And then there's the contractual obligations if you do them commercially where it might not be an option, and beyond that there's hyperscalers and they just order from Foxconn and Quanta directly and just spec out everything from components selection to QA criteria and deadline/DoA/QA penalties.
