Why are optimistic roll ups more popular than zero knowledge roll ups?

Optimistic roll ups seem to have way higher TVL compared to zk roll ups. I was under the impression that optimistic roll ups were ‘temporary’ solutions until zk roll ups were matured.

Why is it that with Starketnet and Zk Era in play we don’t seem much TVL pivoting from say Arb/Op to those chains?

Also will ZK Era likely make it through the next cycle, seem like they’ve been building but the activity of users on the chain does not reflect that.