After taking a closer look at #XMPP clients for the #linux desktop, there's this frustrating "tie" for finding a favorite.
#Dino, which is likeable for being able to do video and audio calls, only has limited support for multi-user chat (complete with fancy moderation tools). These audio and video calls it can do are AMD64-only at this time.
#Gajim, which is likeable for being able to do multi-user chat well (with great moderation tools), alas, can't do audio and video calls to the other XMPP clients (like, say, #Conversations, as they use a newer #WebRTC-based method now).
So there's this strange situation where one is tempted to use both at the same time.
My takeaway is that #Conversations for #Android is the only xmpp client that I would possibly and carefully recommend to family and friends at this time, as it can cover all of the above. (#Monal on #iOS/#MacOS only has "partial" support for Multi-user chat, BTW.)
Yes I'm aware of the existence of Snikket, Quicksy, and Prav. No need to chime in on those.