This is often said, but incorrect. 81% of households have a desktop/laptop. [1] And the breakdown is basically a proxy for wealth. Only 56% of households with earnings of less $25,000 have a desktop/laptop whereas it's 96% for $150k+. For millennials (approximately - age range 35-44) the rate is 87%.

[1] - https://www.census.gov/newsroom/press-releases/2024/computer...