For Pakistan losing to the minnows, there were alot of things in play
First was Shoaib Akhtar and Mohammad Asif doping ban. They were caught with steroids in there body, got a ban, than got a relaxation, but than afterwards PCB decided to pull them as there was alot of controversy surrounding them both.
Than towards the lead up to the World Cup in West Indies, Pakistan used to play matches mostly on flat surfaces of Pakistan. Than, we had this false myth that since we are a nation of pace bowlers, lets choose pacers over spinners.
The 2006 champions trophy had established Bob Woolmer as a bad coach and Inzamam as a terrible captain. Inzi especially was known for being a walking wicket in ICC tournaments. There were too many tablighi jamat people and Inzi was known to be a Tabligihi who was more interested in spreading religion than captaining a cricket team.
In the first match against West Indies, Inzamam, Yousuf and Younis completely bottled the game as they were not able to bat and just threw there wickets away. I think it was Malik who just batted alone and tried to chase the target but the team just kept losing wickets.
Than came the second group game between Ireland vs Zim, and this match ended as a tie where points were shared between them both.
Than the third game came. Pakistan vs Ireland. Now you need to know that in Ireland, cricket is played on green seaming wickets. So when Pakistan and Ireland showed up at Kingston, a fresh green wicket was prepared for them. The trio of Younis, Yousuf and Inzi were again playing garbage. They just didnt know what was happening and for them it was as if Akram and Waqar were bowling. The millitary medium pacer, Andre Botha made such a mockey of this team that he ended the match with 8 overs, 5 runs, 2 wickets and 4 maidens. Boyd Rankin also took 3 wickets.
Pakistan barely scored 130ish runs. When they came out to defend it, the body language was so bad that even though Ireland's batting also sucked they just allowed Nial Obrien to play a match winning knock.
This is why I always disliked Inzi, Yousuf and Younus. These guys were garbage in ICC events.