I saw the Jolt bike ("world's best ebike") on Indiegogo a couple of weeks ago and that actually motivated me to start reading up.
It may be a nice bike, but with no guarantee of delivery or refund, and the couple of articles I read about previous crowdfunded ebikes, it seems too good to be true.
I found a bike in my price range much more quickly than I expected. And grateful I didn't make a snap decision to support a crowdfunded bike that may not ever show up.
Prices are starting to come down substantially enough now that crowdfunded bikes just seem a bit like reckless gambling now. IMO