This is garbage logic and I see it often. Just because 1 inch isn't neccesarily perceptible in terms of being able to accurately call out a guys exact height doesn't mean it doesn't matter. We could go further and say we'll if 5ft 10 vs 5ft 9 isn't noticable neither is 5ft 9 vs 5ft 8, and continue that logic all the way down to balding Indian janitors at 5ft 2. But that's because your logic is unsound to begin with: 5ft 10 vs 5ft 9 is noticable, just as any other height increase is, just not always in the sense that one can accurately judge them an inch apart every time.
6ft vs 5ft 9 obviously has an impact in dating. Yes there's women who will date you at 6ft that wouldn't if you're 5ft 9, no one except some bluepilled idiot could deny it. Whatever success a guy has at 5ft 9, the same version of himself would have more at 6ft.
If someone has zero success with girls, like many men out there (at least 1/3) then even if they become 6ft their chances would be the same compared to 5.9.
The garbage logic is yours who believe that many men that write here and want to lengthen some crazy amounts although their initial height is completely average or very close to that, will suddenly become chick magnets at 6ft although at 5.9-10 may be still virgins.
Guess what, unless you are short, if you have problem with getting women then most of the times has nothing to do with height. And becoming 6ft from 5.10 will have minimal impact to that.
Because most 5.10-5.9 men who look good don't have problems with women, at least to the extend to want to do quadriple LL to fix it.
LL is only for short men or average men who already look good and want to become perfect. Noone else would have a real benefit from it. And for sure not average height ugly (on face or body etc) men or men with terrible style who gain 6-7cm and believe that they will suddenly drive women crazy.
Because at least 90% of the time these men would be completely unsuccessful with women after LL as they were before.