they dont though. nothing about MIT license is granting anyone the ability to misrepresent as the author. thats why its a license and not copyright transfer.
You have to keep the copyright notice and the license. Everything else can be changed as you see fit.
thats just not true. Commits themselves are held up as copyrighted and a claim for creation. just as you cant legally put up a poster claiming you painted a painting you just got a license for, you can't claim the commits.