I cannot say whether the item in the collectorsweekly page is or is not Stevens & Williams.
But I wonder whether many of the Victorian baskets and bowls (etc,) in opal & pink are attributed to Stevens & Williams on the strength of Cyril Manley's books.
Manley illustrated a few items having an opal coloured body with a pink inner and with the rim pulled over and down, extending the pink colouring mostly over opposite sides of the body. In the examples he showed, the "pulled down" section looked more like a deep "saddle" shape with a pronounced curve rather than a "shallow slope" extended around the entire rim.
Another point from Manley was that he considered that there was an "English" (or British?) and a "Continental" (meaning continental Europe) way of adding feet to items. Basically, he was of the opinion that separate foot elements indicated the English way.
So maybe when people, having referred to Manley's books, see separate feet (rather than feet worked out of a larger, single section of glass covering the base), they tend to think it is likely to be English. And if it is coloured in opal and pink, and the rim is pulled over and down, to any degree, then maybe the view is that the item is Stevens & Williams.