I have no experience with Mustart, and I'm not giving them a free pass. But I'd comment that (Americans, especially) have a background of a very sloppy/tolerant experience inserting and removing 5-15 household plugs. Back before required grounding, you could hold the plug even more diagonally to insert and remove it. It can't help that the J1772 has such long pins and such imbalance between the weight of the cable and the open end of the plug. Unless you approach plugging in your EV with a little more .... methodical procedure ... it's not going to help extend the life of these components. If you used to work in a factory, or at NASA, or even RV's, you would not approach the connection as a casual affair. Not criticizing, just commenting.