For beginners. If you have never encountered geodetic programs before, Pythagoras CAD will suit you for learning, since the program is very easy to learn, there are detailed instructions, and Pythagoras CAD solves almost all typical tasks in the field of geodesy.
For the inventory. It fits rather poorly, since it does not support the main formats for describing cadastral parcels (for Ukraine, these are IN4 and new XML formats). For the inventory, I advise you to master the Digitals program.
For a topographer. Suitable. Allows you to quickly draw a topographic plan in conventional symbols, build contours, etc. However, in many organizations there is a standard for the design of topo plans in a particular program. For example, in my work, I keep all field plans, outline and working drawings in Pythagoras CAD, and when the object is handed over, I have to translate the drawing to the standards of the enterprise (a program based on AutoCad)
For a construction surveyor. The option is ideal, since it allows you to maintain a geodetic map of the object with all the data (justification scheme, import the master plan, build executive, etc.)
For a surveyor. Absolutely not suitable due to the specifics of the work.