Recycling works best when you have a big lump of bulk material which can be melted down and reforged/recast. Aluminum cans are some of the best objects for recycling because apart from the labels they are almost pure aluminum, and so you just toss them in a furnace and get the constituent material back.

Electronics are the exact opposite of this: they’re highly heterogenous, with bits of material scattered all over the place. Also, most of that material isn’t particularly valuable: silicon is literally as abundant as sand. So all you can really do is melt it all into slag or dissolve it in acid and then try to extract the trace amounts of valuable bits like gold, but this is so energy-intensive for so little material that it’s not worth it at any reasonable material price.