Yes of course we should claim a stonist reading of the text! Its inconceivable he wouldn't have visited the Rollrights and been mighty impressed. Even if it was only on one of his deer-poaching forays.

Where else would he have got the idea that "Stones have been known to move and trees to speak"?
And who is it that say
"Macbeth shall never vanquish'd be until
Great Birnam wood to high Dunsinane hill
Shall come against him."
Witches!

Wouldn't the Rollrights have been Witch-Central for Warwickshire in his day Rhiannon?