BS, and adults with children are also not deported. From the article you posted.
Biden also said his administration is in discussions with Mexico to have the country receive migrant families expelled by the US under the pandemic-related policy, indicating the pressure the US is placing on Mexico to help stem the flow of migration to the US.
"Mexico is refusing to take them back. They're saying they won't take them back -- not all of them," Biden said, when asked why some families weren't being returned. "We're in negotiations with the President of Mexico. I think we're going to see that change. They should all be going back. All be going back. The only people we're not going to let sitting there on the other side of the Rio Grande by themselves with no help are children."
Families from Mexico and the Northern Triangle countries are sent back to Mexico unless the country does not have the capacity to receive them, the Department of Homeland Security said in a statement this month. If Mexico won't take the families, they are processed into the US.
Now post legit data on how people who are apprehended, processed and deported vs. how many are released into the USA.