Most other random libraries, in whatever languages, do not even offer the option of this "right" version of initialization. They all just seed with a 32-bit integer. If you are content with those libraries, you should be content with a simple `std::mt19937{std::random_device{}()}`.

One shouldn't std::move in a return. Returning a local is already automatically an rvalue, however explicitly moving it disables copy elision.

Mersenne Twister has a huge state, and if you have to use the MT (you need a very long period), you will probably want to be able to initialize it properly. For the common use case is a linear congruential generator which is initialized with just one integer.