Yes…ish… Things keep changing with ESP32, so hard to say the current state of this topic…
And you probably need to use the Beta version of the App for better BT/BLE support.
As with anything curent with Blynk and BT/BLE, the App still needs connectivity to the Server (typically via WiFi/cell), and some Server linked Widgets do not work via the App link alone. thus with an ESP32 already having WiFi, it almost becomes a case of “Because it can…ish” rather than a need to use BLE