All of the above could be summarized under 3 categories more or less: (1) Investment, (2) Dealing with strangers online, (3) giveaways/bonuses. Almost all of them involve random people from the internet asking for money or information.
I think it can be summarized as: if it's too good to be true it probably is. In most cases, scams consist of offering you easy money but to do so they make you give them something first, money, your private keys, etc. In this sense crypto scams are no different from classic scams.
You must have meant
if it's too good to be true, it probably isn't.
Anyway, I agree. Scams are, of course, more or less similar whichever market they are in. So whether they are operating in crypto or in forex or wherever, they are always offering something very enticing, so enticing that it can hardly be rejected by newbies, especially those who are lazy enough to do due diligence.
On a side note, I guess it is more effective for newbies to be given concise reminders rather than lengthy ones.