I don’t think its every Tuya Zigbee device. E.g. below are my Tuya-based Zigbee devices. Some are branded Marmitek and are connected via their brand-specific app (though also supported by the Tuya Zigbee app). Others are branded Moes and are connected via the Tuya Zigbee app. Both apps are Johan’s, by the way. These are all battery powered scene switches/remotes. At least that class of devices does not show the excessive communication as you are experiencing. Maybe the issue is limited to certain groups of mains powered/router devices, like smart plugs.
I don’t have any issues with my Tuya Zigbee devices. I use a Homey Pro 2019 so I can’t view the TX/RX values, but the devices work as expected
The main difference here is that yours are all enddevice and mine are all router
