Yes that's true, I use a digital back because I like the tech cam shooting style. I really enjoy shooting with my Linhof Techno, and my only options is then a rollfilm back or a digital back. I can't really afford backs that significantly exceed say a D800 in sensor image quality, but I think an Aptus 75 is "good enough", reasonably high resolution, good DR and great color, and together with the lenses I think I have a winner also when it comes to image quality, but it's most about that I prefer to shoot this way. As long as I feel I have "competitive" image quality compared to mainstream equipment and that I can print reasonably large I'm good.
The Aptus 75 (and 22) back is also fairly unique (compared to other backs of similar age) in that 100% focus check actually works (most older backs have so bad builtin demosaicers that 100% always look fuzzy so you can't use it to check if your image got sharp). It also has reliable flash sync and low color casts. It's a perfect amateur back for a tech camera. Assuming you get a copy that works in your shooting conditions
I would dare to get an Aptus 75 or other Leaf back again actually, while I think it's likely I've got a lemon I have no reason to believe that this is a systematic error. The back also feels very solid despite its fan vents and piggyback battery. There is much to like. But next time I'll certainly make a more thorough function testing before accepting the back.
As mentioned before, I did already know that repairing is bad news when I bought the back, but failed to realize (or ignored in my excitement of this gear) that "bad" can easily grow into "unreasonable".
I knew a simple operation like changing the fan would cost €1400, but then recalibration and checkup would be included in that price. Then somehow I came to believe that "service check" is performed for any type of repair, since changing glass had the same type of high overhead cost, and thus it would be less expensive if you do many repairs at once.
But now it shows that it does not matter if you do a service check (like I have done), the other repairs get the same high prices anyway! So I guess the back get the dust-blower treatment and sensor recalibrated three times then, once in the service check, once in the glass replacement and once in the circuit board replacement, because that is what you get to pay for. This clearly shows a lack of interest to make it cost-efficient for the customer. And then on top of this I got this stiff dealer thing which makes all go way over the top.
I think it is more about a lack of care of the customer wallet rather than they want to make a lot of money on repairs, the repair volume is probably so low so it doesn't make any difference for them if they overcharge like this or not. They just don't care, because pro customers that buy in the €30,000 range generally don't care either.