sure probably even git a bit less,

but I still would recommend 6 GiB.

no matter of the OS

the problem here is more the programs you run on top of the OS (browser, electron apps, etc.)

realistic speaking you should budged at least 1GiB for you OS even if it's minimalist, and to avoid issues make it 2GiB of OS + some emergency buffer, caches, load spikes etc.

and 2GiB for your browser :(

and 500MiB for misc apps (mail, music, etc.)

wait we are already at 4.5 GiB I still need open office ....

even if xfc would safe 500 MiB it IMHO wouldn't matter (for the recommendation)

and sure you can make it work, can only have one tab open at a time, close the browser every time you don't need it, not use Spotify or YT etc.

but that isn't what people expect, so give them a recommendation which will work with what they expect and if someone tries to run it at smaller RAM it may work, but if it doesn't it at least isn't your fault