Looks to me like both receivers were in the area and Welker could have easily caught the ball had his teammate not been there.
As for the incident: if you’re gonna “take out” another player with intent, then certainly you’d prepare for the hit. It’s pretty obvious in the video that Welker was looking toward the ball and not the Patriot defender... and was not braced for a hit.
If anything is now despicable about this play, it’s Belichick’s characterization of this video. THAT should be fined by the league.
(P.S. - I have no rooting interest in this either way)
The video shows Welker looking directly at Talib. It was a pick play that many teams do including the Patriots.