Too much stuff just doesn't add up to me.

1. His family is very rich. They own at least one country club, possibly multiple, and he graduated from an Ivy League school. The wealthy class have phenomenal healthcare in the US so why would anyone rich want to whack a healthcare CEO?
2. Why would any intelligent killer keep the murder weapon, the jacket he was wearing, the fake ID he used near the scene, and a manifesto on his person a week later? How incredibly convenient for the pigs to find.
3. Why would any intelligent killer, with a wealthy family, be out in public at a McDonald's less than a week later, and not lying low on family property somewhere for months?
4. Why does Luigi have such an obvious digital footprint when the Adjuster planned so well? In less than a day the media dug up stuff like his Goodreads account.
5. Why do the photos the NYPD released look like at least 2 different men?
6. Why did a grand jury indict Luigi so fast?

I think the real Adjuster is still out there and the pigs are absolutely desperate to have a "solved" class warfare incident. Luigi is either a plant or he's unlucky to have been nearby, doing "Suspicious Stuff", and is being framed with plenty of planted evidence.

Edit: Luigi claimed in his bail hearing that he had no clue where the $8,000 in cash he was "arrested with" came from and suggested it was planted on him. The prosecutors used it to deny him bail on the basis that he was "evading authorities". The pigs also claimed he had an additional $2000 in "foreign currency" on him, and that to me sounds like an obvious lie or plant to make him look like he intended to leave the country and get his bail denied