What’s the point of such a high temp when all you need is steam to run the electric generators? Or am I missing something?
Temperatures that extreme are necessary for reasons that don't directly have anything to do with raising steam.
Temperature (of a gas) is a measure of the energy per gas particle, whether molecules, atoms, or (in this case) a plasma of ions: bare, unattached protons and electrons (with some neutrons mixed in if they are using deuterium or tritium in conjunction with hydrogen).
To achieve fusion, the particles must be moving so fast that two protons can collide and fuse into one helium atom; in order to accomplish this, the protons have to have enough kinetic energy (speed, or momentum) to smash through the intense electric field that surrounds each one. Recall that protons carry a positive charge, and like charges repel. To make magnetic confinement fusion work, you need to create a cloud of plasma (protons and some neutrons) where most or all of the particles are moving fast enough, on the average, to overcome the repulsive force of this electric field (the "coulomb force").
One plan is to use heat released by the fusion of hydrogen into helium to raise steam, but that heating would be done by capturing neutrons in a jacket of circulating molten light metal, such as lithium; that liquid metal would transfer the liberated heat to water, which would boil and turn a generator.
A more sophisticated way of using the power of fusion is to make the plasma function as the secondary of a transformer; nuclear fusion would cause this transformer to "kick" more electricity back into the primary (which would be the massive coils that confine and compress the plasma) than was put in, thereby obtaining energy gain and an economically viable fusion power plant.
This goal always seems to be twenty years away. It has been since the mid 1950s, and still is today.