So, I think Ixal you made a good point but you may not realise it. Namely propaganda. Shadowrun is a game of conspiracies, plans within plans, and no one ever having all the pieces of info. This works equally well for different groups depending how they use what they know and what they take away.
Take the war against Sirrurg from 3 different points of view, Aztechnology, Shadowrunners, and Sirrurg/other Great Dragons.
First Aztechnology. As far as their own citizens and the rest of the world at large know, Sirrurg repeatedly attacked military AND civilian assets(Aztechnology had bases within civilian population centres), and finally after a protracted battle the brave Aztechnology forces defeated and nearly killed the Terrorist Dragon, and he only barely managed to flee in order to survive.
However, the public will never know that about 60% of Aztechnology/Aztlan(is there really a difference?) Military got absolutely MAULED during this conflict, they lost 80% of their food production, something the Corp is known for, and their Secret Anti-Dragon Superweapon, while successful, also caused massive casualties and collateral damage in that it makes non-dragons go completely fucking homocidal-crazy for a while after they've been exposed. So they technically won, but they were in a very, very rough spot afterwards, and so they HAD to use it as a PR Victory.
Second, Shadowrunners. So, it's mentioned in a few different places that there were a TON of "irregular assets" used by Aztechnology as backup, scouts, and to clear out one of Sirrurg's lairs in order to goad him out into the open. Now in an operation of this importance, info would be compartmentalised to an insane degree, and most Runners wouldn't know what they were involved with until the very end if at all. So they wouldn't know how monumentally high their expected mortality rate was going to be. A lot of them got pulped in the battle and the ops leading up to it, but by that time they never had a choice. You really think once you accept a high-paying job only to find out the Azzies hired you to help take on a Great Dragon and his party pals, that you can back out? You say no, they kill you for now knowing too much. You cut and run, they hunt you down afterwards as a liability. So in this case, the rule is Never Deal With Aztechnology.
But for Runners that weren't involved directly, all they really know is Sirrurg fucked up a lot of Azzies over a couple years, then got stomped by the ENTIRE AZTECHNOLOGY MILITARY. It doesn't matter if you were on one side or the other or just in the area, it wasn't safe for nobody that day. So just by association, Dragons and whatever they're involved in is fragging dangerous, Omae. Best to stay away.
And then look at the Great Dragons. So, they "rescued" Sirrurg, got to see what effect he had on Aztechnology's concentrated forces and vice versa, and they got to see and know all about Blue-227 and it's effectiveness(and side-effectiveness). And they waited and saw how the Azzies spun the story, what they revealed and what they lied about. And the takeaway here is, if you push the metahumans to the point of desperation, they have the ability to rise up and threaten even the Greats. Granted, not all at once, and not without catastrophic damage to themselves, but a threat nonetheless. And that's information that absolutely CANNOT be known to the world at large.
So let Aztechnology claim the victory here. Let the public see them as heroes for a moment. I guarantee you the Dragons won't oppose Aztechnology so soon, at least openly considering Sirrurg was Public Enemy #1, but you better believe their info and shadow game just went up like crazy. Which means you really never know when that balding middle-aged fixer is actually on a dragon's payroll. Heck HE doesn't know it. And that certainly means you have no clue if what you're being paid to do is ACTUALLY what you're being paid to do, or who your real enemies and opposition on the run is.
When it comes to dragon's, all you know is that they're dangerous, their enemies are dangerous, and you'll never see their true plans unless they want you to. THAT is why you never deal with a dragon. Because Shadowrunners live and die by the information they have, and if a dragon enters the picture, you'll never have all the pieces, or the right ones. Live or die, the decision isn't up to you anymore at that point. It's up to Them.
And it was made before you ever got the call from your fixer.