Generally Doctor Who gets into a quagmire when it starts mining the backstory for story ideas. Too much of it and the show becomes unwatchable. Chibnall didn't appear to have many plans for it beyond introducing Jo Martin's Doctor so it's hard to understand why it was brought up in the first place.
That said RTD seems to have found an interesting take on it with the orphan angle and seems to have used it as a soft continuity reset of the backstory. With the new "happy go lucky" Doctor that we have in the 15th and the fact that we are back to being the "last of the time lords" (at least for the moment) I think it's going to hard to explore the abuse angle in any depth without bringing the angst back.