But a baby has no idea about holy anything. And when we’re talking about disabled adults, we have no idea just what they perceive or believe, unless they can articulate it.
All I’m saying is that within the Eastern tradition, it makes sense to commune people who may or may not understand due to handicap or whatever. They are not profaning the Eucharist. I am not advocating offering Jesus to people who can tell us that they do not believe He is there.
Infant communion is hallowed Apostolic tradition - has been done since early days of the Church by my understanding. Even then the Latin Rite doesn’t encourage it or make a regular practice of it.
Communion of adults suffering from dementia, or otherwise incapable of discernment, on the other hand, has no such traditional endorsement behind it.
It’s one of those grey areas like limbo - we simply don’t know that unbaptised babies will automatically get a free pass to heaven, and NOT end up elsewhere due to their stain of original sin, so we can’t presume that it’s OK to neglect to baptise children.
Similarly, we simply do not know that it’s OK to commune adults who cannot recognise the Body and Blood. And if we are going to err in our handling of the Blessed Sacrament, by all means let us err on the side of denying it too often rather than on the side of being too free with it.
As you say ‘they are not profaning the Eucharist’ - well, profanation requires intent - I’m sure very few people who receive, no matter how unworthy, have the INTENT of profaning it. So they don’t usually incur guilt - although they can be harmed nonetheless, even physically as St Paul says. A bit like sticking a faulty appliance into a power socket will damage the appliance even where there was no intent to do so. The appliance isn’t at fault, but the one who plugs it in while suspecting it is faulty certainly is!
The one who distributes the Eucharist, for their part, has an obligation at least to show proper respect for the Blessed Sacrament by denying it at least in cases where there is so much doubt as to its worthy reception as the case of adults who cannot discern.