That’s fine. Johnny rescinded himself from the forum sometime later over his temper issues, canceling his account – that’s why it says “username” now. The ad/mods chose to leave his posts in place because otherwise it would make a bunch of threads he had posted in confusing about who was discussing what and why.
Not everyone here is hostile to Matt Slick (I’m not, for example, and I invited him here back when I was commenting, per member request, on a piece he wrote against universal salvation. He declined.) A lot of people blame Calvinism and Calvinists for feeling emotionally scarred, and some members post here from that pain. The ad/mods have tried to balance the freedom to speak on that with encouragement to tone things down and get past the emotional pain to work with Calvinists (from whom many of us have come after all, though not myself) as brothers in Christ.
The protection of Calvinists from angry diatribes was in fact one main reason why we (the admins, mods, and site owners) instituted the rule you quoted, although we’re flexibly patient about enforcing the rules.
My apologies, too, if there was a bit of delay in your post showing up. All posts from new members automatically go to the spamcatcher net until ad/mods can check over them to make sure they aren’t selling essays or shoes or drugs or (the new hotness in recent weeks since Thanksgiving) Russian hacking tools which are guaranteed to get past any Captcha security. (Insert irony here, since those tools can’t get past this type of security. 
) After a few more posts (if you care to do so) the system will trigger over to letting your posts in automatically instead. Until then you could have a day or two (or three over any weekends) of delay. I habitually check the spamnet every workday morning, but more randomly on the weekends; other ad/mods are more random about it than that (since I’m pretty steady on my checking schedule).
I would say welcome to the forum, but I know you’re upset so that doesn’t seem altogether appropriate. (So was Johnny, in a long-term way.) Many of us here do regard Calvinists as brethren in Christ, however, myself and the other ad/mods and site owners included – even when many Calvinists don’t regard us as their brethren in Christ. (But some do.)