No, Henny, it isn't. In addition to being nasty and snarky, you must have failed Logic 101 - hey, that is kind of fun.
An "ad hominem" attack is when I attack you personally as a means of refuting your argument, suggesting that your argument is flawed because of some personal circumstance of yours. I have made no intimations about the quality of your argument, merely your quality as a poster and as a person. Pointing out that you're a nasty, horrible person is not an ad hominem attack - it is a statement of fact. If my argument was essentially that your posts were flawed because you're a nasty, horrible person, that would be an ad hominem argument.
I'm available to continue educating you in basic logic and rhetoric, by the way, but I do charge by the hour.
I'm sure that you and others who resort to such tactics wish I wouldn't point them out, but alas, I feel I must.
Silly person. If you held yourself to that same high standard, I never would have said a word. But you want to be free to insult and belittle others, while at the same time whining about how you're being personally attacked. Sorry, peddle that line of junk elsewhere.