It really doesn't matter how you word it. 99% of players will ignore you because they do not know mechanics or want to know them.
You can be a vs a full sustain team, and level 1 tell your team:
"I'd get early grievous wounds/Executioner Blade to deal with their insane sustain"...... and while your team might agree with you..... you'll look back at 32 minutes and not a single person on your team has it.
And most people telling someone how to play ARE taking into account the specific game. That kind of response is usually due to something like
existing.... or in my previous example.... grievous wounds. Or a distinction between
and
on a brawler build (You'd be amazed how many people build
vs champs who have built in Armor penetration or don't use basic attacks)
I assume you specifically care about someone telling an adc how to build. But you know what? I have almost NEVER seen an adc build
vs the Brand they feed 17/3/16. I don't even see them build Life steal. They just keep building straight Crit..... and rely on that Fleet footwork... not realizing that without the life steal/resist, a Mage like Brand can 1 combo nuke them.
I understand the urge to be polite..... but I also think politeness needs earned. I guarantee if I told you how to build in the form of a polite suggestion, in the heat of an upsetting game where you don't know what you're doing wrong (or your team) There's too many things to describe too fast to react for you to actually understand them, and you're probably going to argue with them.