Theoretically you’re correct, but my guess is doing that would get you banned. I personally wish anyone caught doing nothing but BS posts after they join would get a time out, but I’m not in charge.
Besides, what’s wrong with joining rokslide to ACTUALLY participate? People act like the minimum post count is prohibitive in some way, but IMO, if someone is only on rokslide for the classifieds (typical people who complain about the minimum post rule), and they’ve been a member for 8 years with 7 posts, that person is providing less than zero value to the forum, and only taking without actually giving anything in return.