No, a Bronze should not give advice
I keep hearing this comparison to sports where people who don't excel at football can still give advice, and that I agree. A person who isn't physically fit can still give good advice in football.
But League isn't a very "athletic" or mechanically demanding game, and I mean this for low ranks. A Bronze player who actually knows his shit will get out of Bronze regardless of mechanics. A Silver will get out of Silver if he doesn't have mechanics.
If I hear another dumbass Bronze telling me to build all AD on a bruiser that's not even fed, I will report him to Riot so they can deport his bum ass to Dota 2