Well, it won't be a full fledged club - they've just booked a venue with an idea for a club night. They'll have paid a deposit, booked a dj, & run off some flyers.
& if it doesn't work out, the venue just won't accept another booking, because they won't want to deploy staff if the bar take is shit, & they certainly won't want security issues if the clientele happen to be knobs, & they will expect the promoter to pony up the full venue booking fee before re booking.
I was around this sort of nonsense (goths rather than lesblokes) for years - any idiot can have a pop at it, & occasionally the stars align & you've got an ongoing club night on your hands.
I would expect it to tank hard, on the rocks of it being really, really unattractive to actual lesbians, for all the obvious reasons.
But bless them, we should encourage this! ...& then organise terfy events that they definitely won't want to attend because they obvs have their own terf free night, right?