Thanks @Cphusion
Thank you for reminding me with this wonderful link.
I believe it is about updating and maintaining the system which is great.
I as well for more than two years permanently (99.9% of the time) on EndeavourOS I never had a serious issue.
The app I mentioned is a bit different it is not about updating, it is about excluding updates.
Wow @Nomad
I will appreciate if you explain for me how/why it is not needed?