At this point in his career, Ray Allen certainly isn't Mach, he is definitely Curt Hennig. Injured, no where near as good as he was five years prior and just there to take up space and be a name.
Nobody should be salty or angry about who joins the Heat. If you want to chase rings, you go where you think you have the best chance. The Heat are first, the Thunder second, the Bulls are third if Rose stays healthy, the Spurs, Lakers and Mavs are the second tier options, the Knicks are friggin fools gold and really a running joke and you have teams like the Clips, Wolves (yes, the fucking Wolves-2010 Chiefs all over again!)Nets and Rockets that are wild cards, have some talent and/or cash and want to win and have owners willing to spend and deal to get the pieces they think they need to win.
Then you have fucking dumb teams (conventional thinking would put the Wolves here, but there talent is there despite David Khan's best efforts) like the Suns who throw money at garbage talent or just are very, very poorly ran like the Raptors and Kings. Then you have teams no one wants to play for: Milwaukee, Golden State, Cleveland, Washington. And then there are teams that have good talent, good management, good coaching but are kind of small market, or circumstantial successes: Memphis, Indy (small market), Boston (definitely circumstantial (it's OVER. Allen is GONE. KG WILL BE GONE. and Rondo will fare no better than DWill with no talent)). Philly (a decent young squad but could be falling apart).