Max clicks is a common way to start getting traffic first to your site, then switching over to maximise conversions *after* you get sales so the ad algorithm can understand what type of Google users are buying and lean more into them.
This process served me well over 5 years and Audible as their in-house Google Ads guy and other more boring brands.
Check he’s set a max CPC limit and not leaving it open ended. Latter is a recipe for wasted spend from high click costs.
Ask your guy what his plan is over the next few months. He should have what we call an optimisation roadmap and backup plans for when things go wrong, like zero sales after a few months.