Battery University has some tips to increase Li-ion battery life:I do not see ‘more harm than good’ from cycling lower in the range in those articles… unless of course you can provide additional links to credible batt research. I’d be interested in seeing them.
“In terms of longevity, the optimal charge voltage is 3.92V/cell. Battery experts believe that this threshold eliminates all voltage-related stresses; going lower may not gain further benefits but induce other symptoms(See BU-808b: What causes Li-ion to die?) Table 4”