According to the FDA, In their own words

What is an Emergency Use Authorization (EUA)? An Emergency Use Authorization (EUA) is a mechanism to facilitate the availability and use of medical countermeasures, including vaccines, during public health emergencies, such as the current COVID-19 pandemic. Under an EUA, FDA may allow the use of unapproved medical products, or unapproved uses of approved medical products in an emergency to diagnose, treat, or prevent serious or life-threatening diseases or conditions when certain statutory criteria have been met, including that there are no adequate, approved, and available alternatives. Taking into consideration input from the FDA, manufacturers decide whether and when to submit an EUA request to FDA.

Once submitted, FDA will evaluate an EUA request and determine whether the relevant statutory criteria are met, taking into account the totality of the scientific evidence about the vaccine that is available to FDA.

Did you catch that? ....including that there are no adequate, approved, and available alternatives. SO, since they say that PFizer received FDA approval, please try to explain then why Moderna, Johnson Johnson, and whoever else, are still being given out? According to their own words, the EUA is currently Illegal and needs to be lifted. If there is an approved treatment, then no EUAs allowed

Can anyone ELI5 me on where that conclusion is wrong/right?