Strim trimmers just adding plastic?

I’m in year 4 of a 1 acre food forest and I just picked up an 80v electric string trimmer to help me maintain it. It’s been an exceptional tool when establishing pathways and freeing young plants from overgrowth. But I can’t believe I hadn’t thought it this prior…. the string is just slowly getting shorter, releasing plastic literally all over my garden. I’m no purist, but this one felt a little dumb. I use a scythe for a lot of things, but I’ve never experienced a tool as accurate and helpful as the trimmer. Any thoughts to help give me peace of mind, or tool suggestions to use alternatively? What about a metal string!?