I mean the old media still exists. I still have a copy of Dr Suess' "if I ran the zoo" with the racist bits in it. Laserdisks of prespecialized Star Wars are rare collector's items but they exist.
Ideally the rightsholders would still offer the original editions for sale for those interested, but regardless:
The original work is just as available as it would be if it had gone out of print, which is a thing that happens to many genre classics.
So, if the originals are technically still available, then it's fine for the version that goes into the vast majority of people's minds to be altered as any rights-holder sees fit?
Er, what about our cultural heritage? Historical accuracy? Creative intent? The possibility for abuse?
Was 1984 just about a guy with a nice job "keeping things in print?" I mean, sure the guy made a lot of edits, with the express intent of manipulating people - but the originals were all around somewhere, so it's fine?
Not unless it's out of copyright.