That's a happy coincidence. The $300B locked in a reason for fossil fuel infrastructure to exist, it was a subsidy to the buggy-whip and horseshoe manufacturers of the 20th century so that they can linger on into the 21st.

If the goal was to obtain the cheapest energy in the world, LCOE for a next-generation nuclear power plant was $60/MWh [0]. $300B could have moved the United States to a nuclear-dominant footprint for decades.

[0]: https://world-nuclear.org/information-library/economic-aspec...