Again, the only way that the passage in 1 Cor. 10 regarding sacrifice to idols makes sense, is that all three: pagan sacrifice, Jewish sacrifice, and the Lord’s Supper — are forms of sacrifice. Nothing prevented St. Paul to say, simply, that pagans and Jews offer sacrifice and we don’t because Christ has delivered the last sacrifice and now we are only remembering it. But he did not say that, and instead went on, in Chapter 11, to drive down the idea that at the Last Supper the sacrificed body of the Lord is present. So, he accepts the premise that all three forms of worship are sacrifices, but delineates between them.
His point was identification, not a sacrifice for atonement - which not all Jewish sacrifices were, and I suspect not all heathen ones, either.
I freely grant the Eucharist - Thanksgiving - is a ‘sacrifice of thanksgiving and praise’. I deny it wins atonement for sins by participating in the actual sacrifice of Jesus, still ongoing in spite of what scripture says...