The requirement to go down on two knees was removed in the 1970s.
Think about it - Jesus is present in the Blessed Sacrament. His presence cannot be limited by whether He is behind a sheet of metal or of glass. In other words, He is equally present in the Tabernacle or in the monstrance on the altar.
The Church therefore decided that the same sign of reverence for both situations was logical . So the choice was either say we must go down on both knees for both, or just on one i.e .genuflect. and they chose the latter.
I am not saying the going down on both knees is wrong. And it must be a powerful witness to any non-Catholic who wanders into a catholic church while there is Exposition.
But we mustn’t impose customs from our childhood on to new members, in the mistaken belief that they are what the Church teaches.