I disagree with this take. I dislike the Broncos as much as anyone and would agree they have had to many advantages for too long. One of those advantages is very few 5 day turnarounds and the free to air games they get. But typically with that comes a tougher draw. They usually cop more top 8 sides than anyone because broadcasters want them playing other strong teams.
As for a couple of extra home games. Well magic round is a bit of a rort but hardly that big a deal, particularly as it's not a home crowd. And playing Dolphins there isn't a valid complaint in my opinion. Similar scenarios play out all the time.
Edit: just read further on you touching on the free to air games and the advantages they bring. This is correct but until recently the NRL had no say in the scheduling, it was the broadcasters choice. I think the NRL have actually taken a big step in evening this up recently.