There is a solution that could work well. It requires minimum effort but has to be tested.
If you take several reviews and you group all first paragraphs together, then the second ones, etc. and you apply an efficient summarization model, you should have the essence of all reviews.
The model would recognize the most frequent patterns in an organized way and do the job.
It could work with sentences instead of paragraphs.
If the articles have very different sizes, you can use summarization for each of them to 10 sentences, and then apply the process described above.
Note: You can't do this with full reviews next to each other because the model would not recognize the beginning from the end for each of them.
https://huggingface.co/facebook/bart-large-cnn
Other models:
https://huggingface.co/models?pipeline_tag=summarization&sort=downloads