FWIW hora, although I've been actively involved with running MMB for ~5 years, you and I and Peachos like the same sorts of rides by the sound of it - not necessarily the sort of rides people think of when they think of "club rides", but based on what members say, I don't think MMB is a "typical bike club"
There are a whole host of different sorts of rides in MMBs calendar. IIRC you went on an evening local mid-skill level sort of ride - which I suspect ain't really your cup of tea??
I've posted plenty of rides in the past which are limited numbers and are "heading off up big mountains" and Peachos does the same. I also ride on my tod a lot locally, because I enjoy it, because the views from where I live are gorgeous (and also because I have the luxury of being able to ride some weekdays) - the fun stuff near me would get also get trashed if "ridden by crowds".
With regards to MMB, each to their own, but MMB does do a lot of good stuff, so it's a shame to hear people have had a poor experience with it (or are presenting less than positive perspectives on it on here)
One great thing about it is that it gives people new to the area, or who have lost their riding buddies (through carelessness, poor social skills) an opening, or have only just "found" mountain biking an opportunity.
There's lots of other stuff it does aswell...On average we've give £500 a year for each of last few years to mountain rescue and air ambulance organisations. We're founder members of PMBA. We support IMBA and we support the CTC.
We've got connections with local shops to get discounts. We run mechanicing skills sessions for those people who are interested (surprisingly large number). We've got contacts with the police and have helped recover a few members bikes over last few years.
We actively big up local and national bike events from the STW weekender/HTN to MM/SITS/Dyfi. We organise uplift days, weekends away at bunkhouses/cottages/campsites and we organise trips abroad - Many of these are cheaper than they would be for an individual on their own.
We are also very active at car sharing, on every ride, so it makes heading over to Wales, up to the Lakes, or out into the Scottish Highlands a lot more financially comfortable than "going solo".
There's a huge wealth of very broad knowledge in the club and the extent to which people will go to help others out never fails to surprise me - Need a boiler fitting, need a telly, need advice on buying a van, need to borrow a bike/car, need to arrange a wife swap? There's usually always someone who responds.
There are also lights, wheel jigs, maps, survival gear, mountain bike guides, helmet cams, GPS, etc all available for members to borrow for free.
We strongly believe in the value of First Aid (in the community not just MTB) so we run a matched funding scheme. For anyone who wants to take a First Aid scheme - the club will cover half the cost.
There is also lots of SH gear getting sold on the forum. Usually at mates rates, and plenty of times, given away for free. I have saved a fortune buying stuff through the club (with the added advantage it's from people I know and trust). One guy built up a jump bike virtually for free a while back just by saying that was what he wanted to do and then people bunging him parts.
Couple of weeks ago, I needed a bike rack for a w/e whilst van was in for service. One post on forum and I'd got 5 people offering to lend me bike racks.
I guess whatever a club does, it will never please all the people all the time. That said, much as I ride with them very little these days, IMHO MMB is a great club and I have memories of rides with them that will last me a lifetime