Reconstruction wouldn't have happened at all if the ex-confederates had not tried to perpetuate slavery through the implementation of black codes.
That is the most ridiculous statement I have ever heard!
The Radical Republicans under Thaddeus Stevens and Ben Wade wanted REVENGE, and would have done anything to get it. Texas and other states met the Lincoln-Johnson requirements for re-admission to the Union, and that wasn't good enough for the radicals. Radical Reconstruction was wrong, which is why Andrew Johnson vetoed much of it, and it almost cost him his job.