Accomplishment achieving nothing extra for the most part (I bend being flexible) (7,6,4)

I believe the answer is:

getting brexit done

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'accomplishment achieving nothing extra for the most part i bend being flexible' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'achieving nothing extra for the most part i bend being flexible' is the wordplay.
'achieving' becomes 'getting' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'nothing' becomes 'O' (looks like zero - 0).
'for the most part' means to remove the last letter.
'being flexible' indicates an anagram (the word is bent into a new form).
'o'+'extra'='oextra'
'oextra' with its final letter taken off is 'oextr'.
'oextr'+'i'+'bend'='oextribend'
'oextribend' with letters rearranged gives 'brexitdone'.
'getting'+'brexitdone'='GETTING BREXIT DONE'

Can you help me to learn more?

I've seen this clue in The Independent.

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