Not far from my locality is an old Christadelphian Hall - it sports a sign that advertsies their Sunday talk - usually about some aspect of living in the end times.
I have never been inside that Hall but most Sundays, there are a number of vehicles parked on the Hall grounds suggesting a good sized attendance.
This old Millenialist group which started in the 1840s is long past its heyday. It was very active in spreading its message several decades ago and does not have a strong presence with New Zealand census records showing a decline in those identifying as being Christadelphians. Yet well over 170 years since its first inklings in the USA, it still attracts a following in far-flung countries.
There will always be suckers of one kind or another who are attracted to religious promsies of one kind or another.
We ought not conclude that religious belief is the domain that champions reason, evidence and commonsense.
To the contrary, religions meet people's needs for spiritual certainty and reassurance. As long as humans prioritize spiritual certainty over reason, evidence and commonsense, religions will attract followers, jw organization included.
Of course, that is not to say that currently well-attended groups will continue to flourish, but in one form or another, these groups will outlast the steadily increasing blasts of reason, evidence and commonsense .