If attending a school of instruction a reasonable situation but floundering along on their own, even with the best efforts of CiC,
I think a wrong path unless they treat the camera as the expert and use its features to let it do its stuff that they have paid a bomb for and for what we have seen a P&S would have done a better job for them without them suffering from the idea that they have to control the camera to get good results. If somebody is getting good results with a P&S then THAT is the time to think about a camera which widens the field for them* ...
becuase the essense of photography is capturing light not operating a machine.** If an APS-C wasn't getting good results then a FF will be unlikely to improve matters.... but if the results were good and the person knows they have large targets then they might get the FF ... otherwise it is just wasting money to no good purpose.
*Which is why I changed from bridge cameras which served me well for around eight years for the larger sensor of MFT so I could use faster than base ISO but without the weight of APS-C let alone and heaven forbid FF
** and I would have to think hard to list all the various types of cameras I have owned or used at work over the years