No, it isn't. Trashing people's submissions (and other websites in the process, by implying that they belong on <inferior website>) and boasting that you have reported them to moderators is unnecessary. If they're not a spammer, you've insulted them. If they are a spammer, they don't care, so there is no need to do more than flag.

As a reader, I find it to be crossing a line in being overly imposing about your opinions. It is not really constructive or civil, which is the spirit of that guideline.

If you don't like to follow the guidelines here, I recommend reddit.com, where you can actually downvote submissions and selectively subscribe to topics of interest. ;)