Is starting FBA by Amazon still profitable/worth doing in 2021?

There are so many podcasts and blogs that talk about starting an Amazon business using Amazon FBA. I am wondering if it is still a profitable type of business? Some talk about making millions in such a business. I am wondering if this is true? I found some e-commerce tools on ProductHunt that are helpful to me, and I would like to recommend them here. AMzChart：https://amzchart.com/?utm_source=ph_my FindNiche：https://findniche.com/?utm_source=ph_my SellerCenter：https://sellercenter.io/?utm_source=ph_my SocialNiche：https://chrome.google.com/webstore/detail/socialniche-1-free-social/efeikkcpimdfpdlmlbjdecnmkknjcfcp?utm_source=ph_my Maybe you have some tools that can help me? Or talk about your views on Amazon FBA.