It is not entirely wrong. Annual electricity consumption per capita in Maryland has been falling since 2005[0]. Unless a bunch of aluminum smelting plants have come online in the past 18 months, data centers do seem the appropriate root cause leading to a surge in demand.

[0] https://www.eia.gov/states/MD/data/dashboard/electricity cannot drop a direct link, but you can expand the "Total electricity consumption per capita, annual" chart