Fakemon are kind of that unknown medium ground, they are intriguing, but if the effort put into them is well... for a better word, lacking... then they tend to lose interest. But if they are well made, have a fairly decent background/backstory, then they tend to be much more appealing.
Take for example Pokemon Clover, every sprite (for the most part) were custom made and had a uniqueness to them, had dedication put into them. If more hacks that included fakemon were as dedicated and actually detailed their work, then more fakemon hacks would be appreciated... but as it stands, a lot of fakemon hacks seem to be of a Microsoft Paint kind of art, very amateur to say the least.
Don't get me wrong though, hacks like Quartz and Marble are neat and all, but they just feel like a mess of artwork from a 10yr old. (no offense, but throwing a couple of shapes together, adding a face, and some color... doesn't count as an actual Pokemon).
(ALSO... stop mixing REAL and FAKE pokemon together, fakemon need their own region, not a region that is already claimed)