Just because you don’t use it doesn’t mean it’s not successful lol. Far as I can tell it’s been pretty successful. I see people use it all the time, whether with Apple accessories or third party ones. I love it and if you don’t that’s fine, don’t use it.
It could also be down to where people are from too in terms of perceptions of how successful it is. It’s not hugely popular amongst my circles in the UK and the OP is from an even smaller nation again. Apple is hugely popular in the United States where hardware is also a bit cheaper than Europe and Australia. I don’t get the impression MagSafe has been particularly pushed here and I wonder what the appeal of a £59 charger is when older chargers already charge the iPhone. Using older chargers was also something Apple promoted at the iPhone 12 launch and that might have something to do with it.