jquery_ui, jquery_ui_slider, jquery_ui_touch_punch, jquery_ui_datepicker packages should not be removed in composer when upgrading to 7.0 should

It was conveyed months, maybe a year now on the module page that these were going to be removed. If you still need them you should download to your project composer

Hello,
I've re-added the packages in composer as drush updb told me the 4 modules were missing.
But it's strange that upgrading a version, the related modules disapear while we need to uninstall the 4 modules first, so we need to keep them in the project or reload the missing packages.
MAybe a a single message could warn the developer to uninstall the 4 modules and remove the packages himself.
Regards.