@toerag Welcome.
99.99999999% no, as long as it installs and works for everyone else.
The users report digiKam not present in installed system, while there isn’t any reason why it should have happened.
Until and unless they explain step by step how they came to this situation I tend to consider this as invalid report.
Forget dnfdragora and Discover, use it just to search for available and installed programs and dependencies [cit 
].
Use dnf in CLI instead, that should not be hard to learn as you already are familiar with urpmi
DNF commands references