Hey smartass.
1. I didn´t use escrow because I thought I am dealing directly with the dev, who are normaly the guys doing escrow for trades, just check the log I sent, there you will find more information. In Slack it is possible to use anybody nickname and pictures, even in the same channel. It was my fault not being more suspicious, but slack is definiatly not adequate doing trades for non-geeks.
Btw. I read following page, where is nowhere warned of scammer on slack: https://forum.iotatoken.com/t/first-steps-in-order-to-buy-iota-and-how-you-set-up-your-wallet/772
2. Yes correct
3. Correct
4. Correct, thats why his "joke" is so disgusting.

And what you are telling is not true, at least where I am living, in my real-life nobody makes jokes about someone losing more than 5.000 usd instantly afterwards. You don´t amuse yourself at the expense of sb. else, this has to do with good behaving and has nothing to do with the IQ.
If you are sociopath or autistic you might find it funny because you are not able to empathize with someone else.