Your source directly contradicts the "460 years" figure.
There they estimate a 230-year supply at today's consumption rate. Nuclear energy currently supplies 4.0% of the global primary energy production [1]. According to that estimate, producing 50% of the primary energy using currently available reactors would exhaust the world Uranium supply in around 18 years.
There they estimate a 230-year supply at today's consumption rate. Nuclear energy currently supplies 4.0% of the global primary energy production [1]. According to that estimate, producing 50% of the primary energy using currently available reactors would exhaust the world Uranium supply in around 18 years.
[1] https://ourworldindata.org/energy-mix