Trust me SBMM is definitely in full swing. I have countered Thorns before too. Just as i have countered Sunsingers, pre nerf and post nerf TLW and Thorn, pre nerf Sunbreakers ect. Does this mean that these things werent OP? Well obviously Bungie thought so because they nerfed them. A gun that has DoT, has primary ammo, more range than your average HC, a faster fire rate, and a decent reload is OP in damn near every sense. Why choose a legendary HC or Hawkmoon when Thorn does even more work but with less effort. Thorn is OP. It doesnt need to be nerfed into the ground but slight changes are needed. There is a reason why it has always dominated the sweaty meta.