Yes, agreed. But mano sankhara belong to vipaka citta and do not generate kamma. Dasa akusala means bad kamma. Thus the term mano sankhara is somehow misleading; the term “micca sankappa” is better (“wrong thoughts with intention”).
Of course Paṭiccasamuppādavibhaṅga includes the 3 categories mano …, vaci…, kaya sankhara for the PS step “avijja paccaya sankhara”. One needs to know the context in which the term mano sankhara is used.