Think about a trial with 10,000 people to collect the medical data,. Just because they jumped up it fast to get that data from a trial in a shorter time frame does make that data invalid or BS. The medical industry have been setting up trials for many decades. Doing trials is not new thing. For example, one of the things that helped speed up the time frame for these Covid trials, is that it was much easier than normal to get volunteers to participate in the trials. Sometimes that is a really difficult thing to do and takes a lot of time to get that put together to do the trail.
It is always good to questions things. But it is also important to grasp the full picture of things and not grabbing some fact and interpreting it to diminish other facts.