I've had and used a bunch of Fuji mirrorless cameras in the last 2 years, they do produce some excellent photos even with the 'cheap' 16-50mm kit lens.
The X-A5 seems to be released with a new power zoom lens aswell, which if I remember rightly, most PZ lenses are usually optically pretty poor.
In using the X-M1, X-A2 and recently testing the X-A10 in a local store - AF is pretty slow compared to the competition nowadays, even the EOS M line of cameras are much quicker now. Also there is plenty of shutter lag and just general slowness of operation with most of the entry level Fuji cameras.
If you move up to the slightly more expensive XT & XE line of cameras that the AF and general speed is much better.
My biggest gripe with Fuji cameras are the lens selection and lens pricing, they are optical amazing pieces of kit but the price compared to the majority of competition is just too much.
The X-A5 is meant to have the 24mp sensor and new AF system. It's not the same 24mp X-Trans sensor as the higher up cameras mind you.
Like you say, the X-A range for me is pointless. The target audience that buys one won't be able to afford any other lenses, and with no EVF amateur photographer probably wont buy one. Maybe someone who shoots Fuji already and has a selection of lenses would purchase one as back up or for there other halves.
EDIT: For me, my Google Pixel 2 shoots excellent photos and it's with me all the time, so the majority of people do not really need this type of camera.