I find it in bad taste personally.
Talking shit between players on the field? Have at it.
I find heckling pro athletes from the stands ridiculous. You haven't earned the right to talk shit to players unless you have the talent and work ethic to be their peer on the field. If you're not on the field with them, then STFU.
I'm of the opinion that hecklers should get tossed from the ballpark. There's no place for that in this day and age.
That being said, if you want to call the Sports Blab stations and rip a player a new asshole, be my guest, because that is a space for fans.