Be careful of whom you’re attracting to your tribe.

Testimonials attract clients.

No problem with that. The idea is that the proof of your competence being the words of some random happy customers who are excitable and easily impressed is not the kind of evidence that means anything. You will attract the same type of audience who are easily convinced by such stuff. Be careful of who you attract to your tribe. You will be walking on eggshells all your life if you failed to attract the right open minded critical thinking capable audience just because you considered your business model to be successful because the money coming was good. You only get what you tolerate.