Sorry but this is BS. My DH and his BFFs from school all go skiing. They took it up in their 20s when they were single income lads and working because they were bored of going on boys’ piss up holidays. They went cheap - stayed in hostels, hired the cheapest boots saved their money for beer and ski passes. One was a chef and on shit pay. They all went to the standard (rubbish) local comp, had never been introduced to it via family (in fact most grew up on interrail and caravan holidays). They went because they wanted a holiday where they DO something other than leer at bikini clad girls on shite beaches all day and start drinking at lunchtime because there is nothing else to do.
30 years later by DH and his mates take my/their kids every year (I have a fear of high open spaces after a childhood accident), and yes it is expensive when taking kids, trying to rent an apartment that essentially 3 adults can use (2 hotel rooms costs even more). The cheap, but fun, ski train that used to run before lock down to enable cheap/short ski weekends has only just started up again and packed/infrequent, so the biggest cost is flights/transfers and the rip off accommodation costs. The kids’ first encounter was a school trip (around £700 I think, offered as part birthday gift). All the men in this group are very successful in their fifties, so they no longer need to go to hostels, can afford decent hotels/apartments, and pull the stops out on which resorts and slope passes they buy the kids so yes, they are pretty loaded now… but they weren’t for the first decade of doing it.
So yes, there is a huge amount of inverted snobbery - the assumption that people who ski have their own family ski chalet with chalet maids etc is the stuff of crap films and Jilly Cooper. Rather as believing all private schools are Eton.
Frankly, I’ve never moved in circles (investment banking before kids, but again no generational wealth here, I started life in a council flat with a single mother on benefits) where anyone was thought less of for not having skiied since they were 3. Most of them just love the sport, the scenery, the air, the apre ski beers/parties.