I asked this before but maybe other newer opinions from some members.
Is is reasonable to select the dump files for Disk Cleanup? My guess is yes. They are available for what to clean in Disk Cleanup, they've been there a long time (now years), I see not too often any kind of interaction with them, and in case some occasional strange system performance or temporary trouble, guess that new entries would be made to them,... so I selected them tonight for a Disk Cleanup session.
RESULT: System restart seemed faster (although did not try measuring this), and no other ill effects. Must 've saved 2 or 3 GB of space. Was 42 GB used and now 39 GB used.
Very few items in the Disk Cleanup list are found selected upon opening Disk Cleanup.