Insight needed: why is Bill Maher such an ass?

[Max B. Sawicky]

Boundless ignorance?  Since he's a libertarian of sorts,
she could ask what he makes of Israeli law forbidding
sale of land to Palestinians.  Or how he justifies
the addition of 190,000 settlers to occupied territory.
Or what he makes of a proven war criminal as head of state
(a status Sharon had well-established well before the
refugee camp massacres).

mbs

This appears to be Maher's worst topic. I saw him on Larry King claiming
that "there are no such things as Palestinians" and generally placing
himself to the right of Ariel Sharon on Palestinian rights. I don't like
Maher in general, but can anyone offer insight as to why he's especially
such an ass on this issue?