There are no evidence for cryovolcanism on this comet. What we have observed is that comets behave like comets. Gas, ice-particles and dust are released from the surface and from inside through vents, caused by the sun's heat. (Outbursts)
It has been confirmed by at least 5 close-ups pictures of different comets .

Cryovolcanism occurs on larger moons and has an internal heat source (Radioactivity or Gravitational friction).
Wikipedia explains this with pictures:
https://en.wikipedia.org/wiki/Cryovolcano

Sun distance (au): 2,16 Perihel : 21.April 2024 Sun distance (au): 0,78

Time: 17:30UT 2023-12-19 Exp.40 x 65sec
Tel: 0.254m f/7.3 ST-10XME CCD 2x2bin 1.5"/pix
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.