It used to be that absentee voting was a little big difficult because it was meant to allow people who actually, literally and physically COULD not vote in person on the day of the election. Now it is literally a turn-out strategy for the two parties to get the lazy voters who otherwise wouldn't put out the effort to walk/drive a mile or two to get to their local precinct some tuesday in November every other year.
And the DNC knows that there are at least a half dozen and maybe more than a dozen states where a substantial chunk of their voter turnout is going to come from absentee ballots from people who don't know they are registered and those who will trade their absentee ballot for a pack of cigarettes (Wisconsin) or $5 (Louisiana). If only one party is opposing something simple like verification of who is and isn't voting, there is obviously an ox being gored. And, thus far, the DNC has not put out a single rational or legally defensible argument against voter integrity. But there will be liberal Federal judges in all Federal Districts who would be happy to delay any voter integrity efforts for as many elections as possible so the DNC has a chance to take back Congress or the WH so this notion of voter integrity can be allowed to die from neglect.
I agree about IDs. Mexico has a thumbprint on their ID which is dedicated exclusively to voting. I disagree about absentee ballots. If it weren't for absentee ballots, i'd be unable to vote in half the elections due to travel. Any security problems with absentee ballots can be fixed by requiring proper ID for physical drop offs.