No reason not to give the end use the flags for searching. You either get results or you don't. If someone wants to make a simple calculator and not charge for it, they should be allowed to do so and ideally apple will give the tools to the user to find such an app.

Also, devs still do put ads in some purchasable apps So just having a "one time purchase" toggle doesnt solve the problem.

There are models that work with barely any ads and subs. Google Maps is a great example.