Nasri reminds the boo boys why they should boo
Quite why Nasri regularly feels the need to justify himself I'm not sure. Most Arsenal supporters can get that he left us for a lorry load more money and that he thought Mansour stood a better chance of buying a title than most other PL clubs. Most would even get that he doesn't feel any loyalty to Arsenal football club or London. But none of that makes Gooners stupid for booing him. Particularly as the reasons he gave for why he shouldn't be booed are the very reasons Gooner supporters were booing him !
On the contrary Gooners should be booing the opposition players. Along with cheering their own team that's a pretty helpful contribution to their side's efforts. Give them reason enough to boo and they would be stupid not to take advantage of the incentive. On the eve of the Community Shield game Nasri gave them that much more incentive and they took advantage of it. Whether it affected his performance much if at all nobody could really say but he didn't do much to stop Arsenal taking a 2-0 lead by half time. Either way that's not the point. It gave Gooner support the opportunity to make some noise and to celebrate every error he made. That's what supporters are for. To support their team and to try to unsettle the opposition. To create as hostile an environment for their opponents as they can.
Stupid is giving your opponents that special incentive to be hostile. It was Nasri that fanned that hostility. That seems part of his character to the extent that his announcement to retire from international football seems to be more a consequence of the hostility he has created towards himself in the French camp as a decision to concentrate on club football. How much choice did he have other than to 'retire' might be an unkind reflection but understandable too.
Now whenever he comes up against Arsenal he has ensured he'll get plenty of flak. He may claim it doesn't affect him and if he has a good game he'll even claim it encourages him I'm sure. But the more important point is that it affects the Gooner support - and that has to be good. It's not stupid to boo you Samir. It's none too wise of you to make it an obligation to do so though.