Why is the political structure of the Knesset problematic?

a$.$

Elections are often suspended due to violence.

b$.$

Committees are very powerful and can delay major legislation for years.

c$.$

The president can suspend the Knesset with little warning.

d$.$

Elections are highly proportional, leading to large, unwieldy coalitions.

e$.$

The prime minister holds dictatorial$-$level powers.