Bishops have had differences of opinion on various things since the Church began. Nothing new.
There is some concern in USA about the Church appearing to influence how Catholic political figures legislate and/or carry out their executive or judicial functions. When JFK ran, one of the arguments against having a Catholic President (which had come up for previous Catholic Presidents) is that he would be controlled by the Pope or the Church. Also, if the Church is going to punish political figures publicly for their votes or signing bills or whatever, then Catholics may be discouraged from going into public office at all, which is not a desirable outcome.
While I personally tend to favor denying the Eucharist to those who openly support abortion, I can recognize that there are good arguments against denying the Eucharist too. Also, it’s been obvious for ages that Cupich is liberal or progressive or what you call it, and Paprocki is super-traditional. It is not at all unusual that both viewpoints could exist in the same state.
Anyway, the Lord gave us consciences so we can all use our own. If we don’t like what a politician does, we don’t vote for him. I’m not a bishop and it’s not my business to be the Eucharist police, so I concentrate on whether I myself am worthy to receive. If these politicians are receiving unworthy Communions then they’re going to have to answer to God for that when the time comes and it is my job to pray for them and leave it at that.