I have strong opinions on their function, and have spent not-insignificant money to buy/install/modify various 'correct' functionality, eg, buying lamps and switches from Europe and modifying wiring to make the 'correct' functions work (amber turn signals, rear fog lights).
Turn signals that are also brake lights are just insane.
Turn signals that are also hazard lights are silly too. My personal pet peeve is the use of hazard lights to show a public transit bus is stopped for passengers. They'll then switch to a turn signal to re-enter traffic. There is no discernible difference to the lights when the right/curbside indicator light is obscured by a trailing car.
And failure to yield to the turn signal on buses is against the law.
I'm pretty sure Blinkie is facetious.