I do not disagree with those points, all internet advise is to be taken at your own risk.
For some reason I read your post to be more of an attack on the posts of the inexperienced than a proceed with caution message. Maybe I should wait until I’m properly caffeinated before reading online forums.
I really like to hear the non conventional ways people have invested, be it a quick flip or long term. I’ve done both with collectibles in the past as it was at the time a market I was familiar with. Did decent long term on some comic books and really well on some quick flip action figures. An area most would laugh at, however as stated in a previous post I didn’t take crypto seriously when a friend explained all about it to me several years back. I’d say he’s doing quite well for himself at the moment and I missed the boat.
I missed the boat on crypto completely. Never held any. Doesn't bother me at all that I "missed out" because, frankly, for everyone who tells you how much they made in crypto, you've got ten folks who are very quiet about the losses they took.
Call that the "Vegas Rule" - people will brag about their wins, and hide their losses. So, what you're hearing about crypto is a lot like what you hear about Vegas - everyone came back having won a bit at the casinos, right?
But that is simply, mathematically, impossible. Those casinos weren't built to give money away to gamblers...
I've also made it a rule not to invest in things I don't really understand and to invest in things I do. Call it the "Peter Lynch Rule", if you like (Peter Lynch managed Fidelity's Magellan to extraordinary returns in the late 70's and 80's).
I understand Amazon - became an early customer, bought their stock.
I understand bulldozers, and bought CAT when their share price was beaten down in the summer of 2008. I reckoned that it was on sale, and we bought a few shares. I've held it since, re-investing dividends, and it's done well.
I thought I understood 3D printing, and lost a bit of money on a company called Stratasys. 90% of my investment. Poorly done on my part. Not a lot of the portfolio, though, because of another rule that I'm going to call "The 5% rule" - never have more than 5% of your portfolio in one individual stock. Sure, it limits the upside (wish I had put 50% of my portfolio in AMZN a decade ago, instead of following that rule) but it also protects you from the downside of company-specific risk. You won't ever get wiped out by the stupidity of one company's management team...like, well, Stratasys...
As far as generic reading for a financial literacy education?
I posted a list of books I have enjoyed, and recommend, a while back:
https://bobistheoilguy.com/forums/threads/investors-come-in-please.28977/post-2250617