In my backwater of rural France, the few I see are ridden by older folk. The couple of ebike shops in a local town market to the elderly, not exclusively but certainly noticeably.
That said, I was watching a feature on the regional news about ebike shops in Tours. You apparently can trade in your old bike against an ebike, and this has seen increased sales across the demographics. They are seen as an urban solution though, to beat traffic congestion etc, so I guess that's why I don't see so many rurally.
Coincidentally, I saw 2 earlier today (again, an elderly couple) and my wife expressed an interest. She used to cycle in UK but the hills around here (no ride is even remotely flat) put her off. I suspect if I could find a decent deal for her, she'd be back on a bike.