I'd like to know, Is it possible use pyboard for an I3C device?
It will be nice if you can roughly explain how

Q1.12 Is I3C backward compatible with I2C?
Yes, most I2C Slave devices can be operated on an I3C bus, as long as they have a 50 ns glitch filter and do
not attempt to stall the clock. Such use will not degrade the speed of communications to I3C Slaves, requiring
only decreased speed when communicating with the I2C Slaves.
I3C Slave devices with a Static Address can operate as I 2 C Slaves on an I 2 C bus; optionally, they can also
have a 50 ns spike filter.