You are right. The world has changed a lot.
I was watching a show on “The History Channel” about one of those 1000+ plane raids.
The idea was to bomb the Messerschmidt factory at the same time as a ball bearing factory. This was supposed to divide the defending Luftwaffe fighters.
Things did not work out well and we lost over 60 B-17s on the raid and a further 40 bombers were written off as too badly damaged. That is over a hundred four engined bombers.
A loss like that today would devastate the whole country. Then again we lost over 3000 innocent civilians on 9-11.
Not only that, analysis photographs taken at the time showed that only about 5% of the bombs landed within ten miles of the target. We really blew up a lot of farmer’s fields.