You might be asking, "Why not just use a Kung Fu Flash or an SD2IEC?" Those are excellent devices, but they emulate the drive. The disk loading time remains largely the same. Disk2easyflash bypasses the disk drive entirely.
Here is the value proposition:
❌ Games requiring REU (RAM Expansion Unit)
❌ True drive code (e.g., Elite, Defender of the Crown may fail)
❌ Original disk-based save games (not always translatable)
The tool scans a .d64 image for a single-file program. This is usually a PRG file. It extracts this binary and removes the standard disk header (the load address, etc.).