Or option 5: have a problem-solving discussion with DH and ask for his thoughts on how to address the socialization issue if you drop Scouts?
We have tried that and it was not effective at all. DH's view is that recess is for socializing and that DS's time during the week would be better spent on academics than socializing. His recommendation was to set up play dates on the weekend, which I certainly do at least twice a month, but the work of that is all on me and DS always selects the same 2 friends that he already hangs out with to invite. Option 4 (insisting that DH be responsible for helping DS choose an alternative activity) is a good one, thank you.