[javajosh]

The JSON datatype is only useful if you want to query on the blob, which is not the case in Wix's case.

[staz]

But you tell to keep columns that need indexs outside of the JSON so you can query on them, which is not necessary with Postgres

[morgo]

It also provides validation and is often more space efficient :) the internal format also technically supports partial update, but that is not yet a supported feature. So I wouldn't suggest using text if you are not querying.

[orf]

You can query on individual fields with the jsonb type