Thank you for providing this useful information.
Same for me - purchase date 6 years ago. The hardware works; there is no reason for Fujitsu to make it obsolete.
This is probably because you were using computers with spinning HDDs or hybrid drives, not SSD (until recently). Fujitsu’s compatibility problems starting in late 2016 were related to Macs with SSDs and certain macOS changes. Subsequent macOS changes fixed this - now apparently even for older ScanSnap software, based on your comment.
Thank you for describing your use case, connected to multiple computers, which is not unusual. I also use my ScanSnap connected to multiple computers at various times.
I would (again) point out to others on this forum that Fujitsu’s new software, ScanSnap Home, severely restricts using the scanner with multiple computers. This is especially true for current ScanSnap owners who “upgrade” to ScanSnap Home, compared to new ScanSnap purchasers who have slightly less onerous restrictions.
We ScanSnap users should share our experiences so that we can continue to use Fujitsu’s older software with our scanners as long as possible. When a future macOS enforces the 64-bit restriction, we need to be prepared to switch to Vue Scan or Exact Scan, or keep a Mac running an older macOS version that allows 32-bit software.