Ahem... you appear to be correct.
But only recently.
It appears that Blockchain started recording this only a month ago, at block
660900, or thereabouts.
Of no consequence, during my attempt to find this transition I ran across a block for which I could not determine whether Blockchain was recording or not,
https://www.blockchain.com/btc/block/660500. :/
And on another attempt, when surfing to a page of transactions included in a block by modifying the URL, I just coincidentally choose the last page of 211 exactly, on my first try.
