Our goal at this stage (invite only beta) was not to get users who just want to try it out, but who actualy wanted to contribute by reporting bugs and suggestions as beta-testers. This is why we have a survey form, as completing it signals wilingness to invest time in the product. Soon (in two weeks) we will move to public beta.

Even then we won't have search without an account, among other things because bots would probably kill us.

(kagi founder here)