I understand the distinction between the accidents and the substance of the Eucharist, but I don’t believe that changes the fact that Jesus is present in a physical way.
Based on what you’re saying, the host merely represents or contain the presence of Jesus, and is not the presence of Jesus itself. I mean, if what I touch is not Jesus, and what I taste is not Jesus, then the Eucharist is not truly Jesus.
The accidents are merely the form something takes. In the Eucharist, it is Jesus’ presence under the appearance of bread and wine. If it is Jesus’ presence, and it is something that I can physically interact with, then that mean’s Jesus is present in a physical way, not merely a spiritual way.
The limitations you set are only if Jesus is only present in the Eucharist, which is not the case.:
1 - God himself is not subject to decay, but the accidents of His presence area.
2 - The Eucharist is not present at all places at once, but the Eucharist is not the whole of God’s existence. Simply because He is in one place physically does not mean that He cannot be in all other places either physically or otherwise.
3 - God is infinite and eternal, therefore any consumption of Him does not diminish Him. Further, once the accidents of the Eucharist are no more (through consumption or decay), it ceases to be Christ.
4 - As noted above, once the accidents of the Eucharist are destroyed (through fire, decay, etc) they cease to be Jesus. And yes, this means that He is physically subject to the flames or other acts of violence. That is why it is such a blasphemous and grievous sin for someone to profane or abuse the Eucharist.
Jesus is physically present in the Eucharist. If He were not, then the Catholic conception of the Eucharist would be incorrect, and the Eucharist would merely contain or represent Jesus; it would not be Him. Certainly, there is a sacramental reality at play here which is beyond our comprehension, but that sacramental reality does not negate the physical reality.
I’m curious about this now, maybe I’ll call in to CAL some time and see what Jimmy Akin or one of the other apologists has to say on the subject. I’m not above admitting when i’m wrong, but your arguments are not convincing to me.