Are solar motion floodlights bright enough for real security?

Specialist-community consensus on r/smarthome and r/homesecurity is that solar motion lights are fine as deterrents and for short on-times, but they typically can't sustain hardwired-equivalent brightness all night. The Tuffenough 2500LM model is one of the most-reviewed solar picks and earns praise for triggered brightness, but reviewers consistently note panel placement and battery longevity as the real limits.