No way! This is a garden harrow. I had and used one for thirty years before it rusted away and fell apart. I wish I could find another one. You use this to level and till a freshly rototilled garden bed. Those tines carve up the bigger clods while pulling, and pushing levels out the grade and mixes in the fertilizer. Yes, I have garden rake, and that is what I'm forced to use now, but no way does it work as good as one of these garden harrows.
Dethaching a lawn? Good grief. I can't imagine that working...