I agree that the water thing is problematic. I get why it's there, but they really ought to be able to ban electioneering without criminalizing something trivial like handing out bottles of water.
The next two bullets are tiny, marginal changes to parameters that have to exist in any system that uses mail-in voting. You can't have mail-in voting without specifying a deadline for requesting a mail-in ballot, and there are pros and cons to mailing out absentee ballots too early vs. too late. Reasonable people could argue for setting these deadlines a little differently -- I don't have an opinion on them at all. Those differences definitely don't amount to Jim Crow On Steroids.
Drop boxes are really just a red herring since every voter has their own personal private drop box, along with a government-issued butler who checks their drop-box six days a week. If we required people to use the public drop-boxes, then yeah that would definitely restrict the ability to vote in meaningful sense, but in a world with private drop-boxes and government butlers it's hard to make that argument with a straight face. The state of Georgia could completely abolish public drop-boxes altogether and it wouldn't matter.
I don't have an opinion on the last point either. Somebody has to have final authority over elections. I'm sure there are probably reasonable institutional reasons on both sides on whether this should be centralized or decentralized and also whether it should fall to elected officials or appointees. Over the last couple of days, I've noticed an uptick in the number of articles retconning this whole controversy to be about this point specifically, but that could be a function of the fact that I just started paying attention to it a few days ago. Regardless, if somebody tells me that they're really, really outraged about a state they don't live in placing their state elections under a political appointee versus an elected official, I don't believe them. No normal person gets that mad over something that would normally be the most boring item on the most boring legislative calendar.