For retrofitters, because it retains the flexibility that later versions deliberately removed.
The biggest drawback to updating your modules with v71.0 data via WinKFP is the patching of factory loopholes. Older SP-DATEN files sometimes contained firmware variants with more permissive parameters—such as looser torque limits on diesel models, more aggressive exhaust burble potentials in early N54 maps, or simpler module bypasses. Newer files lock down these parameters to comply with updated global emissions and safety standards. Feature Deprecation bmw spdaten 710 better