Why would he, why wouldn't he ... well, he doesn't have to ignore it, I suppose. I can't imagine what would motivate him to revisit it. It doesn't seem likely.
I take his comments as a diplomatic doff of the hat to Chibnall, nothing more. He was asked and said he had no intention of "unwriting" it, which would be an explicit retcon of Chibnall's retcon. The Timeless Child could never be brought up in the new RTD era and there would be no contradiction to his statement, is all.
Yeap, a simple tip of the hat towards Chinall as RTD moves the show onwards, nothing wrong with that, as it should be, as i am sure RTD has his own ideas he wants to stamp onto the show during his run.