If you just say that you are legit and talk about doxxing yourself then this will probably not be enough for most people to send you a seed phrase.
In my experience at least, things go a lot better when people have your name and address, especially when you're somewhat known in the space. But as always, it's a risk/reward thing - if you have the choice between trusting someone to help you, or being stuck forever out of your wallet, some people don't have much to lose and decide to share the details. In the current case case OP seem quite tech litterate, so they also have the option to wait for moore's law to do it's job and crack the wallet in 10 years, which tbh is also a valid strategy.
