It's nice to see spammers are putting so much effort into this. I guess this is what we call an excess of form.

Note to spammers: It's easier to simply make good posts

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I suspect someone is using a bot of some sort to search for posts, and change what they say. I wouldn't be surprised if the spammer doesn't do anything himself after the bot is setup, and account created.
Well that's the whole point of the bots as the owners can just sit back and relax whilst they do all the work for them. They just use a program to automatically change a few words for synonyms which often is a big red flag as posts start to make less sense and stand out more (I've seen them swap bitcoin 'mining' for 'digging' etc.) The real problem here is this account could just be one of hundreds all doing the same.
The merit system should do a pretty good job of combating this because these guys probably will not get sufficient merit
It will help greatly but people will still farm accounts this way then worry about getting merit later (or farm that as well). There will still be a market for accounts with potential rank/activity as well.