It's not that clear cut, and one cannot dispose of complex topics with simple comments.
Sure one needs basic skills, and the schools are paid to teach you those. Many schools fail in that, but there are no easy solutions to that. The CAA does very little to help.
Spin training? The only phase of flight where one's speed should be anywhere near low enough to stall, let alone spin, is on the final approach, or especially the base to final turn, and then you are too low to recover. Speed control is essential in all phases of flight, for all the standard reasons, but spin recovery is unlikely to add to safety in normal GA operations.
I don't think anybody thinks light GA over over-reliant on technology. Airbuses, yes, probably the automation is overdone, some of it has been implemented in a debatable way (AF447 etc) and it is a fact that almost no Airbus pilot fully understands the various systems and their various modes, and evidently it has bitten a few of them... But light GA? No. Cockpit automation is absolutely wonderful. It drives cockpit workload right down, it enables us to navigate more accurately than even ATC can make out on their radar, it has transformed the ability to go places with confidence and safety. And it has transformed flight in IMC from a once haphazard exercise where a pilot knew his position to within a few miles at best (airliners got away with it largely because they were high enough until within ATC radar range) to a precise method where you can pop out of cloud on a GPS approach and the runway centreline is right in front of you. Sure some people don't know how to work it, but what is one to do about that? Well, there are some solutions, like a Type Rating for a GPS
but do you really want regs like that?
I agree with the comment
A lot of GA is stuck in the past imo, the whole whizz wheel brigade make things less attractive to younger generations who use technology.
but that is another broad topic... how to make GA more attractive to today's younger people who have the money but are very strategic as to where they spend it, and where they spend their time. GA needs a lot more women, for a start
But that won't happen all the time it is dominated by knackered 30 year old rusting wreckage which you have to climb into like some playground contraption...