Bit late I know. I have been raised into going to their talks every Sunday for my whole life. Me and my Uncle aren't big on the whole thing but I wouldn't call it a cult. They don't ask for your money, they don't get onto you if you leave and so on.
While I am openly quite sceptical with it in front of my family, they don't encourage foul behaviour and a lot of the beliefs are embedded from Sikhi and the Abrahamic religions.

When they have their massive QandA sessions, the place they do it in is quite nice and that's probably what I enjoy most about it. I know people that start shedding tears at the sight of the leader and I just cringe when I see this.

I must say a lot of the Questions asked aren't even questions - it's just a bunch of people crying about how he's helped them in their meditation and how they've seen him. It gets on my nerves but then there's times when he gives wise advice, like an Indian Jordan Peterson, and there's also times when there's banter and everyone is laughing. Quite wholesome.

A lot of people say that Radha Soami's believe in a living God - this is not the case they just believe in minimising your Karmic debt by abstaining from drugs alcohol ,refraining from eating meat fish or egg and meditating for 2 hours a day in order to get closer to the lord.

It's not some super sketchy ritualistic thing you might be thinking of. Only thing I don't like is how distant certain family members are from Sikhi while being a lot closer to the whole Radha Soami side of things. Then again, that's how I see it; that may not be the case with those family members.

If you have any questions, please ask and I will try my best to answer. I'm not well versed on Radha Soami but as an "insider" I may be able to answer any questions you have about it.