Is it possible to query/identify vector tiles created in ArcPro and uploaded to AGOL? If not, are the attributes stripped out during vector tile creation?
If by "query / identify tiles" you mean features as if it were a Map Service, the answer is no. You can store more attributes in the vector tile data by highlighting fields on the ArcGIS Pro layers, but they are accessible only for styling / labeling as far as I know.
Depending on your use case, you may want to publish a feature service alongside your vector tiles (with invisible or blank symbology) for dynamic popups and alike.
Way too many details associated with this topic... check the Pro help files for the ins and outs if you already haven't
No, this is not too detailed. There answer is no.
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