Why do you think this won't happen? Ginsburg was nominated on June 22, 1993 and confirmed on August 3, 1993. That's 43 days between nomination and confirmation. John Paul Stevens was confirmed in 20 days. O'Connor was confirmed in 2 months. So if we assume September 26th as a nomination day, the Republicans have enough time to confirm someone within the normal timeframes and the normal hearings/debate.
If Trump nominates Barrett today and we use the same 43 days, Barrett would be confirmed on November 8. It'll probably end up happening sooner, but it's not out of the norm.
I am of the camp that McConnell should have at least given Garland an up/down vote. And I think McConnell and the rest are hypocrites given what went down in 2016 versus what's going on now. But Legolas is right - what was extraordinary was what happened in 2016. Not what's happening now.