My original sewing machine (Lamair Helvitia)bought for my 21st birthday by my mum, sewed over pins like they weren't there. I had that machine for over 30 years.
My original Janome bought in 2001 also sews over pins. But my 6600 doesn't like to at all so I remove them except at seams where I walk the needle across one stitch at a time.