I see no sub-text unless it is amidst the myriad of opinions and interpretations this Exhortation has been subjected to.
Catholics expect that the Holy Father's should prevail. Without any clear and public declaration to the contrary by the Pope then the Universal advice to the divorced and remarried not to receive Holy Communion remains in force.
In his failure to reply to this 'dubium' the Pope has apparently answered, "sic et non" (yes and no) thereby leaving it to local Churches to enforce the law.
This the bishops are doing each claiming fidelity to AL, according to his interpretation of the Exhortation. Therefore we must expect that in some dioceses it will be mortally sinful for divorced and remarried persons to receive Communion yet in others it will be perfectly acceptable to have both the sin of serial adultery absolved without repentance or firm purpose of amendment and such persons being allowed to receive the Holy Eucharist with a guarantee of immunity from mortal sin.