> the clinical trial
This is one of your many points of confusion; it is completely normal for even long approved interventions to have many clinical trials in varying stages. There are currently 92 trials for the Pfizer vaccine listed on clinicaltrials.gov, in stages from “not yet recruiting” to “completed”.
And also 1,761 between “Not Yet Recruiting” and “Active” for the notorious untested drug aspirin.
> many of those benefits and risks are, in fact, unknown
That's kind of expected with an EUA more than a fully approved intervention (but even for the latter it's always the case), and why disclosure of potential unlnown risks is required with EUAs.
You unsupported assertion that this requirement is routinely ignored would be a problem if it was true, but you offer exactly zero reason to believe it is true, surrounded by a lot of irrelevancies that show you don't understand the context.