From the perspective of a student club in the midlands I tend to agree with you. Student clubs have such a fast turnover time for introducing complete newbies to vertical techniques it is often difficult to show the general student caver more niche parts of srt and rigging. We're often lucky if we train more than a handful of riggers per year and at the most it would usually be the basics and how to be safe.Also as a club in south Wales we focus on doing horizontal caving as we have a limited amount of SRT kits and rope , so when we do go to the dales or the peaks it is nice to have topos that make SRT easy and quick and also to know the amount of gear we need to bring, so that we can run multiple trips on the same day. Almost all of the SRT trips we run are to do with teaching people SRT and the occasional sightseeing or sporting trip so safe and easy rigging is a priority.
Of course if we have any keen beans then the (vaguely) more knowledgeable members (those who like to procrastinate their work) are always happy to show them new things. I have been on several trips where the only option is to bring your own hangers/no topo and it is an interesting element to add and, I find, a very fun one.
I feel student clubs have the responsibility to run multiple trips on the same day and guide members through trips more closely than other clubs perhaps, and ensuring all participating are capable and enjoying themselves (not to say this isn't an important part of any club's trip but more so when you have the SU to look out for, and likely don't know your fellow cavers well). I tend to find resin anchors and topos speed up the process greatly, meaning people are warmer and can enjoy what the cave has to offer at the deeper/farther reaches. Likewise, in the case of multiple trips running simultaneously its really helpful to know reliably what rope lengths are needed per cave so you can plan what trips can happen and not double book ropes.
I am all for more training though! I, for one, like the sound of learning more trad/exploratory style rigging techniques.