The problem with Tuya is that they don't manufacture the devices themselves. Instead, they provide a standardized interface for all those low-cost manufacturers and get paid by them. If it were easy to fake Tuya requests or set up your own account (trust me, I tried this to integrate a Fingerbot into Home Assistant, but you have to jump through countless hoops, and the developer account keeps expiring every few weeks), those manufacturers would simply automate this process through their own apps.