In 2017 and 2018, the answer was no.
but since we have geoshape I'm wondering if that's changed.
Here's the idea:
Please say yes, please say yes, please say yes.
🙂
Hopefully this solution can work for you: https://community.esri.com/t5/arcgis-survey123-questions/buffer-tool-for-survey123-map/m-p/846713