I posted another comment about this recently.
It appears that NYC is having about 1 e-bike fire per year, per 100K persons. (see below)
It also appears the NYC is having about the same rate of e-bike fire injuries: About 1 injury per 100K persons, per year.
I actually bought a nice e-bike and returned it, cause I didn't want to lose sleep over the possibility of an e-bike fire. The estimated probability is very low, granted.
References: https://www.consumerreports.org/electric-bikes/how-to-preven... "E-bike ownership has skyrocketed in New York since the pandemic began, and with it, e-bike fires, according to the New York City Fire Department (FDNY). There have been 75 e-bike fires so far this year, which is on pace to double last year’s total, officials said. The fires have caused 72 injuries and three deaths."