How to decide if you should create a brand around your product?

If you think in the long term about the product, the brand is a must-have. You can not expect to get a constant inflow of users unless your brand is well-established (at least in your niche). Following resource will give more in-depth answer to your question - https://knowledgehunt.co/resourc...

You always should, without a consistent brand message it will be tough to build trust and onboard users

There is no decision. Build the brand. With the impending death of the 3rd party tracking cooking branding is going to be more important than ever.