I don't really think it is "acceptable" for heterosxxual males to get any cosmetic surgery at the moment.
It signals insecurity and this is frowned upon. With regard to LL it is seen as very negative, because you are losing a pair of healthy legs to something which will end up giving you 2-4 inches more and reduced athleticism or wheelchair for life.
Factor in that women don't like this because they are attracted to "good genetics" which height signals, so if a guy gets LL, their biological instinct is that they are getting cheated as they might get "inferior genetics" without knowing it. Plus you have naturally tall men who feel like shorter people can "steal" their positive traits.
Then add to the fact that society really does not want to accept the fact that short males are frowned upon for something they have no control over, as you risk losing a major part of your workforce, basically destroying society and you have a perfect coktail as to why LL is probably the most hated cosmetic surgery out there.
Well,if you do any cosmetic surgery,you should keep it secret from people,especially from women because it reveals a your weak point and insecurity.
And I am sceptic about the "tall people feeling short people steal thei traits".
For example i've read about a patient that managed to gain my height with LL.I don't envy him,especially after reading the hell that he has be gone throught.I thought that if someone is determined to suffer so much for gain some cm,at the end he deserves it.
And LL is a dangerous surgery,very few choose to do this.That thing that you said would happen if LL was a joke,like drinking some meds and after growing easilly of 10 cm,which LL is not.