Confused why his ways are so feeble (5-5)

I believe the answer is:

wishy-washy

I'm a little stuck... Click here to teach me more about this clue!

'so feeble' is the definition.
'wishy washy' can be an answer for 'feeble' (I've seen this before). I'm not certain of the 'so' bit.

'confused why his ways' is the wordplay.
'confused' indicates anagramming the letters.
'why'+'his'+'ways'='whyhisways'
'whyhisways' with letters rearranged gives 'WISHY-WASHY'.

'are' is the link.

Can you help me to learn more?

(Other definitions for wishy-washy that I've seen before include "Watered-down" , "Bland -- pale" , "Diluted" , "Ineffectual" , "Feeble, insipid" .)

I've seen this clue in the Sydney Morning Herald.

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