Not until he gets voted or picked by a coach he is not it is that simple.
This forum is notorious for saying guys are all stars, when they are not, but this case there is some merit.
There is certainly merit, but Bradley is badly blocked by a few already-tenured all-stars. The fan voting muddies things, and I don't see the team launching a humungous PR campaign to get out the vote for Bradley. Maybe I'm wrong.
There will be spots for 12 players, but James, Anthony, Wall, Lowry, Drummond, Butler, Wade, George, Love, and Bosh are locks for the game if healthy, so really two. Paul Millsap is at the front of the line after those guys, and then there is this writing on the wall that the Knicks will orchestrate a massive campaign to get Porzingis in.
That's a glut of frontcourt guys, though, so one spot is probably somehow going to be available. Maybe two with an injury (If an injured big is going to be replaced, Whiteside or Horford will probably get the nod).
Isaiah Thomas is probably the favorite-- the fan support, the narrative that he's been underrated for too long, the narrative about the Thomas acquisition being the turning point for the team, and the points-per-game angle all support him. Also, PG's get picked more often than SG's.
So who are the top 1-2 guards on the outside looking in? Teague is a candidate who was in the game last year. The fans will certainly vote Rose and Irving into the conversation. Beal and Derozan are also good candidates. Then there's Bradley, who may be the best defender of the bunch and is certainly right there in it.
Bottom line, though, Bradley's a real longshot. To get into the game in 2016-17, actually, I think he'll need to be "snubbed" this year. A lot of the tenured all-stars had to be snubbed a few times before they got the respect they deserved (Teague, Millsap, Bosh, Love, Kawhi Leonard, Jimmy Butler, Demarcus Cousins, etc..)