No. Unfortunately, you don't get Cumulus points at Digitec. However, it is sometimes the case that if you actively participate in the community, you get vouchers.
Source Cumulus points:
https://helpcenter.digitec.ch/hc/de/articles/360000018540-Can-I-collect-Cumulus-points-when-I-shop-at-Digitec-Galaxus-AG-