It is not false information. It is the OFFICIAL strategy guide. If it was some random guide I'd understand, but this is the official guide by BradyGames, this should be held just as legitimate as if it listed on their website. It is approved by Deep Silver and therefore should be listed here.
Aisha who was beheaded by the gang’s leader, Jyunichi. (Visible above)
Jyunichi was never leader of the Ronin. The Akujis were the leaders.
After Johnny's untimely passing, the Boss is the only original Saint remaining.
The Boss was not an original Saint. Gat, Dex and Troy were already in the gang.
Crashing Phillipe's plane brought the Saints to Steelport
Phillipe's plane didn't crash.
The name of the weapon is "Inflato-Ray"
The game is the primary source of information. Stuff on the websites or in the guides can be added as trivia, but the websites and all of the guides have repeatedly proven they are untrustworthy sources.
I've found nothing in the game to indicate that there are "Acts".
Incidentally, the only source of information that there were "Acts" in Saints Row: The Third were the Achievements, and the divisions there didn't make much sense.
1: They could have changed the title of the achievement
2: All the obituary years were removed anyway.
3: I'm pretty sure they mean from the first generation of Saints (the Saints formed in 2006, the same year that the Boss joined)
4: The Saints were responsible for crashing the plane, then they parachuted out and ended up in Stilwater, its the same thing, they don't have to be so specific.
5: "Inflat-O-Ray" is a typo.
6: There is a refrence to the Acts in the game, in the final cutscene for "The Real World" Jane Austen mentions that "like all good stories the second act begins with a call to action". The Real World is listed as the last mission in the first act in the guide.
The Jyunichi thing was the only mistake on the website that wasn't fixed or could be explained.
And yeah you should probably concentrate on adding information from the game itself. The plot section of the game's article has been empty since the game was released, and when I tried to add to it you removed it.
I disagree, and feel that there is no need to separate the navbox into acts at all.
Unlike in previous games, there are no clearly defined grouping missions in Saints Row IV.
Saints Row and Saints Row 2 were very clearly grouped, by virtue of having three sets of gangs storylines bookended by a coherent prologue and epilogue. And further strengthened by the fact that the Theatres and Newspaper Clipboard grouped them in this way.
Saints Row: The Third had a less clear grouping, due to the intertwined paths, but it was simple enough to split them by gang.
I've split the Saints Row IV into rough lines by objective, but there are no clear separation worth splitting by collapsible sections, and Steve Jaros even said that the missions structure was different than in previous games - so there is really no point trying to force them into collapsible-sections, just for the sake of consistency with past games.
The point of the navbox is to navigate between missions at a glance, and I don't think this purpose is furthered by adding collapsible sections for the Saints Row IV navbox.
In Saints Row: Third, it's easy to say "I know it's a Deckers mission, so I'll expand that section", but for Saints Row IV, you're not just going to be able to say "I know it's an Act 2 mission..."