I don't get this. Imagine Catholics lecturing Protestants how to celebrate the Eucharist. These Protestants seem incredibly arrogant. Ecumenism means unification based on truth, not compromise for the sake of compromise. To the extent that there is not shared doctrine, the ecumenical modus operandi should be mutual respect. These Protestants certainly are not respecting the Catholic Church's right to her own beliefs on the nature of the Eucharist here. Again, the arrogance is just rank.
While you are correct in your assessment, remember that these representatives are giving 'presentations'. They have NO voting privileges and are simply stating their case. Please don't allow yourself to get overly excited by their comments. They are simply just that ... comments.