"Musk's SpaceX launches more satellites and recovers more rockets than the entire rest of the world combined by a gigantic margin. Musk's Tesla is the only new American auto manufacturer to rise to having a best selling car model in over 100 years."

What does this have to do with the fact that Musk has repeatedly made false statements that has cost others money?

Yes, Musk has done good things. That doesn't mean he cannot also do bad things.

"Where the firetruck do you and so many others come off casually slandering Musk and Altman as con men? Aren't con men people who promise to do things, but can't and don't and instead run off with your money? What the everlasting hockeypuck are people who slander these guys as con men actually on about? Does your license to be full of shortcake extend to lying to yourself and others about what is actually going on out in the open where anybody who was even vaguely concerned with reality can see it?"

It is not slander to say that Musk has conned people out of money. For many years he told customers that if they bought the Full Service Driving feature when they bought a Tesla that when autonomous driving became available "within months" that they would get it for free. That is no longer true. So people paid money to Tesla based on a promise that was not true and was not kept. Con men take money from people based on false promises.

Also, when Musk made his infamous "He had financing readily available at $420." tweet, he was blatantly manipulating the price of the stock to the detriment of bondholders who had covenants that said they would get a large chunk of shares in the company if the share price didn't exceed certain prices on certain dates. He blatantly lied in order to make sure bondholders couldn't get the shares that were written into the contract when they loaned Tesla money. That is something a conman would do. He also made lots of other false statements about other products at Tesla (semi-trucks and Optimus Robots) that he had to know were 100% false when he made them but were designed to keep the stock price high.

Again, Musk has done some good things. While he isn't the innovator most people think he is as almost every innovation that is attributed to him came from someone else, but his superpower is that he sees the value in others innovations and then has the capability to overcome any and every obstacle in the way in order to get those innovations to market. That drive has allowed him to do some very good things for the world, but that drive when used in unlawful (or legal grey areas at best) ways can lead him lie to and cheat others.

"If anybody can give me some insight into what the rucksack they mean by "conmen" when using it to characterize Musk and Altman, I would be forever grateful."

You are welcome.