Nah, I don't really care how many pretty boundaries he hit. His team lost, heavily. And they always lose. And Tamim is by far their best player (21 or not). Talent isn't just about playing attacking shots you know, at least in test cricket. Its also about survival and temperament.
Look, I'm not blaming a 21 year old for playing like a 21 year old, but I disagree with the people who say 'Oh, he should obviously keep playing like that all the time. Run a ball 50s and 100s put the opponent on the back foot.' Well they don't, because as soon as tamim gets out, bangladesh seem to physically wilt. Tamim sets the tone, and the other batsman try to follow it, except they aren't good enough.
Like I say, I wouldn't blame him, but I'd definitely encourage him to change his outlook. He needs to adapt to situations eventually.