Crowdbotics Python/Django Developer interview questions

I applied for this position and shortly afterwards scheduled a call with HR. The call was brief and was used to schedule a further two interviews. These interviews went well and they seemed very enthusiastic. This took place on a Friday and I was told "we will be in touch on Monday". I didn't hear anything back for over two weeks, even after I had sent an email asking for an update. This was the first red flag but I decided to continue anyway. The next step was a take-home coding test where you had to make a simple Django application using their system. Again for the demo, the team seemed enthusiastic. They asked me for feedback on their application and what I would improve. Again I was told, "We will get back to you on Monday". I was ghosted after this. My experience seems to mirror another review on this company. Here is my theory, they ask you to do a coding test. Once you have the coding test completed they ask you for feedback on their product. They use this feedback to find bugs or improve features and then ghost you after. It is my opinion that they are using job hunters as free testers for their mediocre software. Steer clear and look somewhere else.