Yep. I don't think there's any absolute truth to these things. Categorizing is a tool. The prefixes and suffixes in circumfixes often seem to have enough separate background of separate usage in some special cases that they can be explained apart from each other, but that isn't necessarily beneficial. In practice Dothraki has a lot of very solid circumfixes. I think that was an intentionally acquired feature.
In adjectives you can indeed still see how the prefixes and suffixes work slightly separately, if you really want to look at them that way. Negatives of the adjectives get a prefix /o(s)-/, and then are turned to contrastive by adding the suffix /-(a)n/. If the suffix /-(a)n/ works there as a separate entity turning an absolute quality to a quality relative to something else, we can expect it to do the same with the comparative, and then we can expect the /a(s)-/ to be an entity in it's own right too, some kind of positive grader, perhaps ....and so on.