@Thatoo I am not one of the devs but please allow me to respond.
You are completely right that contacts sync is very important and that it's current state is bad. However you are wrong in thinking that MIR and Lomiri are geeky and not used by your mum. In fact everybody uses them and without them there is no Ubuntu Touch.
Unfortunately the current state of affairs is that the few devs have to spend all their resources to developping the base system and do not have much left to work on higher layers like contacts sync.
As this is a community project you will have to work on it yourself or wait until somebody else will.
Me I would like to read a book and listen to the music files on my dlna server. As this could not be done I had to start working on my own app and fixing/extending various parts of ubuntu touch (led, gestures, media-hub).
Sorry I cannot help you making you feel better but I hope you can understand why things are as they are now.