Amount of data from this global clinical trial would be astronomical for Big Pharma. It will continue to accumulate as they are tracking long-term effects.
I spent 15 years as a scientist specifically working on various stages of the vaccine development process (19 years total in biotech/biopharma), and I have stayed as far away from these mRNA vaxxes as possible. Even before we saw that they do, indeed, transcribe DNA (making them a gene editing therapy, not a true vaccine), I already knew that there was no way the usual protocols for verifying safety, efficacy, etc. had been followed with these vaccines. And because they're a relatively new, relatively unproven technology, there was no justification for fast-tracking them on similarity basis. You were right - the people taking the vaxx right now ARE the clinical trial. And we're finding that the prevalence of severe side effects is a lot higher than would normally be approved. If the covid vaxxes were in a true clinical trial, the trial would have been shut down by now.
Keep in mind that just because someone is a "medical profession" like a doctor or a nurse doesn't necessarily mean this person has any special knowledge of the vaccine development process. They're usually just repeating what their superiors told them to say.