" . . . I have to disagree" - that’s what keeps things interesting around here 
In my defense of Scansnap, I failed to mention another reason why I used them for so long. I was able to give them to ordinary users, who are not tech savvy, and they rarely needed support. I found the scanners to be rock solid for my Mac and Windows users, needing only the occasional software upgrade when we replaced a computer, or moved a user from Windows to Mac (or vice versa).
I admit few here would find that a requirement.
I have seen support for Macintosh Computers used in business rise from the days when it was nearly non-existent to what we have today. But Apple has always had an “our way or the highway” attitude that has required vendors, and users, to find workarounds for various problems. Like those faced by programmers in the App Stores or the problem with the Synology NAS you mentioned.
I’ve never used Synology hardware, but I did use multiple iSCSi Drobo’s at work. Drobo used to provide iSCSI software with their systems but stopped a few years ago when the software vendor they used raised their price. iSCSI support is included in Linux distributions and, ASAIK, is still included in all versions of Windows. Apple doesn’t support iSCSI, and I suspect Synology doesn’t write their own software for the Mac. Whether they do or not, Synology just passes on the extra cost to their Mac customers.
I think the problems we face as Mac power users are likely to increase as we go forward. Apple’s primary focus is not on the Mac, they are interested in high volume. They aren’t the scrappy “Think Different” company of old, they are the new 800 pound gorilla.
Apple apparently sees no reason to worry about making changes that break third party solutions. Businesses that run Macs have always just rolled with these changes.
I think we will have to do the same.