ASAT that doesn't involve strong mechanical capture like a net and deorbiting is a bad idea™ from the outset. That's not really feasible and there are very, very few legitimate needs to shoot down any satellite. Plus, the prospect of an arms race or open conflict in the final frontier doesn't help global security or anything else except murderous, megalomaniacal autocrats intent on say destroying a GNSS that would only have the effect of escalating painful reprisals.