250W makes a bike a motor vehicle that needs liability insurance?
The first assertion is arguable, but the second is laughable. The EC must choose-- either hold e-bikes to motor vehicle standards but allow them motor vehicle level performance, OR restrict them until they're less potent than a fit cyclist but exempt them from MV requirements. To do both is obviously nonsensical and probably pandering to vested interests.
This is to express my gratitude to Justin of Grin Technologies for his extraordinary measures to save this forum for the benefit of all.