But employers give no credit for experience gained through community service. I have never once seen any evidence of that.
I don't think that's entirely true. I've been on many search committees. There is some volunteer work that gets a little credit, if you are the person who is in charge of a big project. I'd rather hire the person with experience chairing the board of volunteers over somebody with no experiece at all. It does not rank equally with paid employment though, not even close, I'll grant you that.
The type of volunteer work that does get you some credit though is not the type of forced labor we're talking about here. The vast majority of kids doing forced labor aren't going to be getting leadership experience or practice organizing events. They are going to be putting in their hours doing drudge work. And for kids who want to get experience doing meaningful volunteer work on their own, there is nothing to stop them. So the idea that this is great as a requirement because it will be valued by employers is nonsense.
As is the idea that this will be some wonderful boon to students on their college applications. Again, there's nothing stopping motivated kids to voluteer without a requirement. And college admissions officers aren't stupid. They can easily find out if forced labor is a requirement.