I suggest that because there could be scenarios where someone would like to ripple the clips around but not move the markers that have been set.
That’s good to hear. 
Also, just to add to the suggestion about chapter stops, there is another use case I forgot to add: Youtube. There is that feature on youtube that if you list the timestamps along with a title for each section in the description box then the youtube player will list them as chapter stops for navigation. Seeing as how producing content for youtube is a very common purpose for so many using Shotcut, a feature like that would come very much in handy. After a user finishes their edit, then can set chapter stops with the markers and there could be perhaps an export option to produce a txt file with the chapter stops and the names written in the format that is ready for youtube.