The answer is no, but it has become much less intuitive. The old dialog is still there, but getting to it is really tricky.
When you select the Crop Pages tool, it just lets you draw a box on the page. When you right-click that box you have several options like "Set ArtBox", "Set CropBox", "Set BleedBox", etc, as well as other, non-related options. The trick is to double-click that box after drawing it. Then you'll get the old Crop Pages dialog, with the Remove White Margins tick box and everything.
The really dumb part is that changes made through the right-click menu can't be undone, but changes made via the dialog can be... Go figure. Also, there's no option in the right-click menu to open that dialog box, nor is it accessible from any menu item (as far as I could see). I've discovered it by accident while playing around with the tools.