No I don't believe I said that at all, so if you have a reference to that post please post it.
There is a drop down list in which you can choose Ignore or Delete, whilst avast displays what it considers the best option based on its detection you don't have to choose that option. So it isn't a default action as such but as it says a (recommended) action, that is likely to change depending on the circumstances of the detection. There is however, no way to change how avast comes to that decision, but you don't have to accept the recommended action, that you should be able to change.
By clicking the inverted triangle, see image extract from the OPs post, it should also show Ignore as an option.