Its a good analysis. However Conte has changed Inter from last season to this season. I suspect if you do the same analysis for different seasons under conte, or maybe pre and post lockdown, you will see different results. I am not defending Conte or ranting against him, I am just curious. If for example you find that for Conte these results have been improving, maybe that answers your question.
If you generally want to know why I defend Conte sometimes... the answer is simple, and it was the same argument I had for defending Spalletti. The only thing that matters, Inter's position on the table:
2016-17 (Banter era): 7th
2017-18 (Spalletti): 4th
2018-19 (Spalletti): 4th
2019-20 (Conte): 2nd