He's updated his IG with putting posts back and something to the effect of "all the assumptions over a picture that has nun to do with fb" So it's walked back or redirected at least for now.
In theory, with one of the best route runners in the game in Diontae Johnson to learn from, a respected veteran in Allen Robinson as an example for professionalism, and Tomlin, Pickens has the opportunity to grow up and become an impact professional. If we can get a working offence and Pickett can step up his consistency he could be a monster. Whether he does it remains to be seen. Lots of people talked a lot about Tomlin after he traded AB, then changed their tune once AB went off the deep end, turns out keeping the lid on with him that long was a minor miracle.
He has the want to for some of the unglamorous parts of being a receiver, he's an enthusiastic blocker for example. Like any receiver, once the headache he causes outweighs the performance he brings, he'll find himself somewhere else. Not a lot of receivers have been traded away from the Steelers and gone on to bigger better things. Other teams by now should be buyer beware when trading for Pittsburgh receivers.