Personally I would rather keep everything bang up to date, especially as I have dji care. Even if I hadn't I would continue to update. Dji put all the wonderful technology into my Spark so I have to assume they will only change things for the better. Also in view of all the new regulations, I would rather be up to date.
I have had to revert back to dji4 app. 4.1.15 and the firmware that was in use a year ago using assistant 2,to allow me to carry on using my huawei lite 8 smart phone, dji' solution was get a new phone which I cannot afford to do.