Typically, you are only guaranteed freedom from persecution where free speech is invoked. That persecution being from the state. Other people are free to react to your words however they like (within the law). As the law currently stands, political communication of the type Izzy participated in is not proteceted.
That said, we have no right to free speech in Australia anyway. It's really a moot point. Maybe we should have one? probably. I guess it's never been a major issue.
It is actually religious communication.
And your second point is moot, Free speech is just that, if something (speech) is not proscribed by law it is free. Folau broke no laws. Only by the fevered dreams of some zealots and those who like to be virtuous can what he said be construed as hate speech, however it did not call for any deleterious actions, it made no incitements, defamed no person or organisation. Yet we have a situation where an employee has been sacked for something that is not an offence, and is secondly a commonly held belief in an orthodox mainstream church.
AND it is highly amusing that only the homosexual portion of this particular post has received any outrage, where is the angst for the drunkards, fornicators, adulterers etc.
I am not a church goer, I don't like them at all nor am I a great fan of Folau, it is the ethics of the situation that pose the problem for me.
No lets retain a drunk, some drug users, drink drivers and domestic violence abusers, but FFS we can't have somebody posting shit on that miraculous twitter thingy that could offend some poor dear. The same people happy to condemn Folau are also those happy to retain these others in many cases and that is totally laughable, we have on one hand criminal offending in some cases with actual victims of actual crimes, against a situation of the potential of hurt feelings.
Really the truth is a bit less palatable, it is just about money and a single CEO. Just like Weapons of Mass Destruction that never existed, lets not get caught up any further in debate over falsehoods and purported virtue, its just about money really.