Back in the 60's, when Lego was still "a box of bricks", the Erector Set went the "specialty" route.
I had a box o' generic parts that I had tons of fun with and plans to build a whole BUNCH of stuff [which I did, for several years in fact]. Only a few items needed 'specialty' parts. But I remember seeing the specialty kits in the toy isles. My parents wouldn't buy them, saying "you've already got a HUGE Erector Set". (they were smart)
Apparently the Erector sets nowadays are actually 'Meccano' sets.
So they repeated the same mistake.
At least they're still made of Steel. You gotta give a young kid something he could actually hurt himself with, then supervise how he uses the tools until he's safe with them. Getting the occasional cut from a semi-sharp steel edge is a good training tool on why you use safety precautions, learned at a young enough age where you can't really hurt yourself THAT bad, and it tends to stick in your mind better.