For example on https://www.amazon.ca/gp/product/B0D365TLFM/ref=ox_sc_act_title_1?smid=A1QJDC269B9YUV&psc=1
there are 5 reviews, but the summary sent to the API duplicates them:

As you can see, items 0-4 are replicated as 5-9.
Fixing this, may fix the incorrect cons as listed below, but it may not because some of them like "Critical: A few customers experienced issues with the tub not holding water properly (3 customers)." is not even hinted at in those reviews.
If this is still incorrect after the fix, we'll have to look at it on the API side.

In Network tab, you can filter by method:POST url:/summaries to easily see only those API calls.
For example on https://www.amazon.ca/gp/product/B0D365TLFM/ref=ox_sc_act_title_1?smid=A1QJDC269B9YUV&psc=1

there are 5 reviews, but the summary sent to the API duplicates them:
As you can see, items 0-4 are replicated as 5-9.
Fixing this, may fix the incorrect cons as listed below, but it may not because some of them like "Critical: A few customers experienced issues with the tub not holding water properly (3 customers)." is not even hinted at in those reviews.

If this is still incorrect after the fix, we'll have to look at it on the API side.
In Network tab, you can filter by
method:POST url:/summariesto easily see only those API calls.