NO, that has nothing to do with it otherwise things would have been treated the same way in 1917. Heretics and schismatics had a common baptism in 1917 as well.
Things changed in JPII’s 1983 Canon Law because it is yet another example of the false ecumenism of the Vatican II Church.
Was simply was explaining from an RCIA or “Rite of Christian Initiation of Adults” perspective, that is all.