I have a Hollis SL that I shoot occasionally, that has MWT about that. It's well down the barrels, and I only use low pressure stuff in it, so no worry there. My biggest concern, as others have mentioned, is denting it.
Guns with barrel walls that thin should be used with extreme care, IMO. Hunting is not necessarily the issue ......... but handling them around vehicles, in workshops, on shooting carts ........ anyplace where those barrels can strike a hard object to dent them, is how damage usually occurs. There are plenty of other suitable guns that are not so prone to barrel damage. I'm no big fan of super lightweight shotguns, anyway. Others may be, and that's fine. But, lightweight guns require an entirely different shooting style for me. I have learned to adapt to them, so that I can shoot my .410 doubles reasonably well, but it takes a conscious effort when you shoot 9 lb. 12s and + or - 5 lb. .410s.