Had any angel-cult been lawful, Paul would have distinguished it from the abuse
If, in the Apostle's judgment, worship of this kind had been owed to angels, and if he had thought it lawful to consecrate feasts and chapels to angels, to sing hymns to them in the public assemblies of the faithful, to invoke them, and to fall down before them, he would not have condemned the worship of angels without qualification.
Had impostors brought some excess into the religious worship of angels among the Colossians, he would have marked it out plainly and would somehow have separated lawful worship of angels from unlawful. That is certainly what the teachers of the Roman school would do if some sect arose now that, in their judgment, gave the angels too much in this respect.
Latin
LXXX. Quod si quis ejusmodi cultus, ex Apostoli sententia Angelis debitus fuisset, si licitum existimavisset festa & Oratoria Angelis consecrare, & in publicis fidelium coetibus hymnos illis canere, eosque invocare, ac coram illis procumbere, non simpliciter damnasset Angelorum culturam, sed siquid immodicum in Angelorum religioso cultu apud Colossenses ab Impostoribus fuisset introductum, illud distincte notavisset, & legitimum Angelorum cultum ab illegitimo quadam ratione secrevisset: ut facerent proculdubio Doctores Scholae Romanae, siqua secta jam exoriretur, quae ipsorum judicio, nimium quid Angelis in hoc genere tribueret.