Tuya Wifi + Bluetooth Lights continue to work after router goes offline. Its a key thing i look for in lights that they be Wifi + Bluetooth which not many offer.
As a Tuya Sales Manager you are naturally obliged to describe your products in the most beautiful shiny colours.
However, I can’t imagine that so many HA users are wrong when it comes to how “local” Tuya based WiFi devices really are 
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Tuyacloudcutter* 
and completly wipe 
the vendor/stock firmware and replace it with something 100% local and open source called esphome 
*supported devices only
cant argue with esphome 
Guess what just stopped working for me 
…Tuya integration lol
So at this point we have extra evidence here that the entire Tuya thing - specifically those Tuya wifi devices - is NOT a well-supported hardware ecosystem.
There might be individual Tuya wifi devices that are good - with good build quality and with compatible chips to replace stock firmware with esphome. But if any smart home user is not planning / prepared to do firmware flashing, I would stay away from Tuya.
Tuya zigbee devices, on the other hand, would be a “maybe” - depends on the build quality and the feature set.
A year or so on and I’ve experimented with various brands and devices so I can answer this question to some extent now!
I would recommend against any cloud brand. I have a Nest doorbell and it sort of works. Initially I figured it would just be a vague theoretical privacy problem, but I think it’s worse than that. You are buying into a semi closed ecosystem. If it’s well designed and just works, then great, but typically stuff goes wrong, like my doorbell rings on one google home device, but not the other 2. I have no way of debugging this, but with protocols like Zigbee or Matter it’s a lot easier to dig into. You also end up paying a subscription, which adds up over the long term.
I would now recommend anything that supports Matter, or at least Zigbee. These are great because they just appear on your Home Assistant with almost no setup and you’re not reliant on the manufacturer’s poorly designed and confusing app to do the initial configuration.
With that in mind, I’ve had success with (in the UK) Shelly, Sonoff and Aqara. Those are who I’d turn to first for a new device.
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On top of that, consider also safety aspect. Those “brands” that are not transparent about the manufacturer, should be left a side at least on products that are connected to house (mains) wiring. There are freaking scary products around. Not because they use tuya chip. On the other hand, all of the worst do…
A matter certified device can only expose (very) basic functions (like toggle) and “hide” all other (basic) functions in the walled gardens (cloud/app/accounts) of the manufacture 
Let’s have a look at a random sonoff matter device as they convinently made a table for us showing their cloud connected app (with plenty of trackers obviously) with account(?) is obligatory for full control 
and obviously even updates 
At this point in time it is somewhat obvious that matter was carefully crafted to protect walled gardens from google, amazon, apple, samsung and other proud promoters of csa 
So your line 
Is indeed fact for matter devices