Devoid of opinions - don't watch television so much! (8)

'devoid of' is the definition.
Both the definition and answer are adjectives. Perhaps there's an association between them I don't understand?

'opinions don't watch television so much' is the wordplay.
I cannot quite see how this works, but
'watch' could be 'view' (synonyms) and 'view' is found in the answer.
The remaining letters 'less' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

Can you help me to learn more?