How to access bigquery

As shown in the figure, is it possible to connect to bigquery without uploading json in other ways?
Because some other visualization products can directly authorize the Google account, I feel that this method will be more convenient

@beta No, Service Accounts is the only way.

What is the reason for this?

@beta Service Account is what Google recommended, since it's not connected to a person, which the previous OAuth was (deprecated in 0.36 or something like that).
Which other option are you looking for? Provide a link to Google's documentation.