Because there isn't enough context to draw conclusions and most people don't know what they are reading.
This sort of report includes everything that goes wrong with anybody who took the medication. That means it includes "things that would happen anyway". It doesn't attempt to normalize or contextualize that vs the baseline rate. Note that there are not any phrases to the effect of "X% increase of problem Y" anywhere in it. That isn't it's job. Even more researchers will need to look at that, and for most of the issues the data may well just be signal noise.
This sort of report includes everything that goes wrong with anybody who took the medication. That means it includes "things that would happen anyway". It doesn't attempt to normalize or contextualize that vs the baseline rate. Note that there are not any phrases to the effect of "X% increase of problem Y" anywhere in it. That isn't it's job. Even more researchers will need to look at that, and for most of the issues the data may well just be signal noise.