Astonishing that after half a century of development and use, vinyl wear remains a phantom entity that can't readily be demonstrated, or explained. In my book, the best explanation is that it doesn't exist to any practical extent, for well set up quality carts such as are at issue here. But everyone remains paranoid, just in case
There's no basis to be afraid. Keep calm and carry on !
I don't buy the line contact=low wear argument, for reasons set out on the stylus profile sticky. Beyond what seems obvious that quality styli have low wear.
There are downsides to carts that use low VTF, not least that generally infers low damping, which is a hazard for lf stability. Nevertheless, fashion and history went that way for a time. But there have been (and still are) very fine examples of carts in high and low VTF camps, and all stops in between.
It's cartridge suspension, rather than the stylus, that determines spec VTF range. For MC carts with a heavier generator, mechanics can dictate suspension parameters and determine VTF to be a little higher. But 3g is nothing really, and not significantly different to (say) 1.5g in pragmatic wear terms. If the cart will tolerate it, trackability generally improves with increasing VTF, as per the OP.