No, they push for DC and Puerto Rico statehood is to add four Senators who would be 100% (D)imbo and liberal. That would change Congress in perpetuity.
The push for DC statehood is an effort for something plainly unconstitutional. The constitution permits only a "District (not exceeding ten Miles square)" for the purpose of "becom[ing] the Seat of Government of the United States" to "exercise exclusive Legislation in all Cases whatsoever." United States Constitution, Article 8, Section 17.
The Constitution specifically did not designate the District as a state. The area is a city of no more than 10 square miles, i.e., a very small city in size. Representation in Congress is permitted only to the "states," not cities. United States Constitution, Article 1, Section 4, "Each State shall appoint, in such Manner as the Legislature thereof may direct, a Number of Electors, equal to the whole Number of Senators and Representatives to which the State may be entitled in the Congress."