Let's say you rename an object. The DB gets updated and the
content cache gets cleared. Solr is out of sync still having the old
object name until the cronjob kicks in to update solr. So far so good.

You have a section page listing content based on solr content. The
content cache for the section page also got cleared because you
renamed the object. Now you must be very lucky if nobody generates a
new content cache version of the section page (with old solr content)
before the cronjob kicks in to update solr.