Unfortunately for all, its just politics as usual.
The truth is, a vote for Carson probably is a wasted vote. People have every right to do that. But then the other campaigns have every right to point out that someone who is not actively campaigning is a wasted vote — it was BREAKING news on CNN. Every campaign is competing for the same voters. Of course they make the case you should vote for them and not the other person. Rubio was out saying he was the most electable, so don’t waste your vote on the other guys (his team also had at least one tweet that was deleted on the Carson breaking news, as did the Paul campaign).
This is just team Carson trying to transfer blame for their own failures and being a pack of sore losers. Instead they should have been out trying to tell voters why they should vote Carson and not the other guys instead of leaving early and putting out news that made EVERYONE think he was probably dropping out. On the issues, though, Carson is bad on immigration, weak on pro-life, social, budget, deficit, education, 2nd Amendment, etc... His 10% is about his likability factor. Look for that to tank.