A lot led astray holding anarchic views must be a myth (3,5,4)

I believe the answer is:

old wives' tale

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'a myth' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'a lot led astray holding anarchic views' is the wordplay.
'astray' indicates anagramming the letters.
'holding' indicates putting letters inside.
'anarchic' indicates an anagram.
'a'+'lot'+'led'='alotled'
'alotled' with letters rearranged gives 'oldtale'.
'views' anagrammed gives 'wives'.
'oldtale' going around 'wives' is 'OLD WIVES' TALE'.

'must be' acts as a link.

Can you help me to learn more?

(Another definition for old wives' tale that I've seen is " Doubtful lore".)

I've seen this clue in The Telegraph.

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