Why is Chapter 15 of the SN not 'Eternalism'?

Saṁyutta Nikāya (SN) 15.3 when translated by Ven. Sujato says: > Transmigration (samsara) has no known beginning. No first point is > found of sentient beings roaming and transmigrating, hindered by > ignorance and fettered by craving. For such a long time **you** have > undergone suffering, agony, and disaster, swelling the cemeteries. > This is quite enough for you to become disillusioned, dispassionate, > and freed regarding all conditions. Why are suttas similar to the above in Chapter 15 of the SN not 'Eternalism'?