I think a more interesting question is how the current dynamic between Debbie and Cecil affects Oliver’s story. Iirc the tutor was provided by Cecil as she had experience working with super powered children.
But show Debbie just finished rebuking Cecil’s aid as a show of self reliance. Does this mean Debbie will raise Oliver on her own? Does she find someone else?
He was more conflicted during his fight with Mark than you’re realizing. Nolan started changing before the series started. It’s not as abrupt as you think if you consider that the changes were already happening in season 1. His actions in EP 7 and 8 definitely blurred the lines a bit, but the moment with Mark was supposed to demonstrate that these were feelings he had been trying to bury for a while