That's kind of what I'm getting at. I'd venture a guess that the "cultural group" weren't huge mountain bikers before. Maybe they had bikes and rode them occasionally, but they weren't mountain biking 4+ days a week. But then ebikes came along, and they like to ride them. So while that contributes to there being a 50/50 split of ebikes and regular bikes on the trails, it hasn't actually really contributed to a mass exodus of mountain bikers to ebikes. It's just a new, additional user group.
There's basically two types of e-mtbers: 1) people who didn't ride bikes much before for whatever reason, but now ride their ebike, and 2) people who rode mountain bikes a fair amount, added an ebike to the quiver, and now ride ebikes some or all of the time.
Type 1 is just a new user group on the trails, for better or worse. Type 2 is what I interpreted gunder's comment to be referring to, and like I said, I don't see a majority of traditional mountain bikers making a full time switch to ebikes for the reasons stated above along with like 20 other reasons.
I'd also venture a guess that type 1 users will grow tired of their ebikes, and in a year or two, their new toy will be in the garage collecting dust next to their nordic track.
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