I believe it has been packaged differently over the years, so I cannot be certain how it is on your laptop. If it becomes uninstalled, you should be able to reinstall it alone. This Dell reference may help: How to download Dell Update or Alienware Update application?
I recently had an issue with my Inspiron. BitLocker (not installed on my Windows Home system)  locked my Laptop and all of those backups created by Support Assist were inaccessible. I needed to rest the device. Fortunately, all data are saved in the cloud so nothing was lost other than time.  As a direct result of that problem I have been trialling different backup software. {won't mention brand} runs full bare metal backup to external drive and creates a boot disk. Perfect for my needs. Doing that makes Support Assist backup redundant.  is it possible to uninstall all Dell software retaining only Dell Update?   
Uninstall Dell software but retain Dell Update