I’m not opposed to new nuclear energy in principle. However Microsoft, an unrelentingly bad organization that consistently acts in bad faith to its customers, employees and businesses parters, and is seemingly dedicated to making awful products that never meaningfully improve, is not something I would trust to do nuclear safely.
Thankfully, any actual new type using modern tech have self-limiting reactions. Thorium ones, for example, can't meltdown because the high heat in that process kills the reaction itself.