Thornmail needs a buff

just had a jhin do about 2.8 phsycal damage from basic ttack to a 300 armor mundo in 8 seconds without taking any noticeable damage from it. 0 LIFESTEAL ITEMS. I mean. people complain that its easily mitigated by one lifesteal item. BUT NO LIFESTEAL ITEMS. I mean. does this item even work? is it bugged? or is it that weak? I mean look at this shit.

jhin with not a single lifesteal item. and he didn't even have the lifesteal mastery. he had dft. I mean what on the fucking earth does this item even do?

auto attackers are just running rampant in the league of legends

you can literally go to my match history and check his build. no lifesteal. full ad.

thornmail is a piece of trash