On this question, a moderator wrote (emphasis mine):

On the main site, comments should not be used to have extended discussions. Please use the Stack Exchange features properly. Also, refrain from continually pinging a mod. That behavior is inappropriate and might lead to getting a suspension for abusing the Stack Exchange features.

I was simply replying to comments they made my questions.

Why did a moderator threaten me with a suspension for "continually pinging a mod" whereas I was simply replying comments they made on one of questions? Aren't users allowed to reply to moderators' comments?