…but you didn’t even start the serial monitor? That’s the “output” tab of VSCode, that hasn’t got anything to do with the serial monitor.
Use the PIO sidebar → General → Serial Monitor project task to even start the thing.
And of course make sure that your weird, turtle-slowness baud rate of 19200 is also set at the baud rate in the platformio.ini with
monitor_speed = 19200
Otherwise the default speed will be 9600.
In any case, to get a clean output with the ESP32’s bootloader, you should really be using 115200 baud all the way.