The US must expose what foreign actors are doing because it's in the interest of America's enemies — who stand in defiance of US values and democracy — to shape the minds of US voters. Russia's attempt to brainwash US voters might be successfully weakening US support for Ukraine, and China knows it helps to have some sympathetic members of Congress. Awareness of these programs can help the US government and citizens defend against them.
This report is nothing but a psychological operation by US intelligence agencies and politicians to sway public attention away from their failures as elected leaders ahead of the 2024 elections. US lawmakers have historically blamed either Russia or China for meddling in elections, but the only true revelations in this report relate to America's polarizing political divisions, which are really at fault for the nation's problems.