Yep, this happens a lot actually, lol. People get tunnel vision and continue focusing on the same target. I had to finally make a macro since people weren't watching the 1 pop up above the enemy's head. Apparently the sound effect snaps them out of tunnel vision and they switch targets now, so it has been working better this way, lol.

I have heard of people getting banned for "macro spamming", but I've been using them for a few days now and all I've been getting is praise of using them so far. The only reason I think people have reported macros so far is because:

A. You push it 5+ times in a row (which does constitute as spamming) and it keeps going DING DING DING DING DING DING DING DING, lol.
B. The players are mad because they lost, so they report the guy for "spamming" a macro

In any case, if you use them responsibly, there shouldn't be an issue. I have a macro for when we're in the lead with time running out, one for the marked target, and one to let people know I'm capped on medal stacks, advising someone else to pick them up. No problems thus far.