Like you rightly said, a sweet and pleasant picture is painted for these persons and when they come in, they see an entirely different ball game.
I know of a guy who I would like to refer to as a Facebook whale because he gets over 200 likes on anything he posts but he came to steemit and have spent nearly two months but still can't understand the concept of steemit. After coming across him and having intensive Chats with on whatsapp, I came up with these few reasons why people tend to get frustrated on steemit and leave or abandon their accounts thereafter ;
¶ most people are generally not given proper orientation of steemit before joining
¶ steemit is just basically for Internet-surfing lovers, seekers of financial freedom(which should serve as a motivation), people who love to read and write. If the person doesn't fall within the listed categories, he or she could find steemit frustrating
¶steemit is also for the smart simply because of the complex terms and crypto terminologies used and so, if the person is not smart enough to understand and decipher these terms such as smt, sbd, steem power, steem dollars etc... Steemit becomes a hard nut to crack. It will interest you to know that a newbie recently asked me to explain the difference between steem dollars and sbd
¶finally poor Internet connection could be a very important reason too as this is frequently experienced in my country where it takes close to a minute or more to get a content posted or even to make a simple upvote/resteem. It's really frustrating and it takes someone with a lot of patience to overcome this huddle
Man these are also great reasons. You summed it up nicely. Thanks for sharing that