You mply that secular people cannot keep any tradition, i.e. if I fast on Yom Kippur, I am not secular. On the same token, I can say that if you are not keeping all 613 mizvot, you are not religious. Would you agree with that? 'Religious Jews' is a stupid term too then. My opinion is that people should define themeselves whatever they want.
Red Cross: Scale of sexual violence in South Sudan is unprecedented (Reuters)
from the article: Poll: Fewer than half of Israelis see themselves as secular