never in however long he lived, did tom marvolo riddle ever expect to get the defence against the dark arts post. and - since he’s been rejected time and time again - originally with his paranoia, he would’ve strode up to the old coots office to jinx and curse him till he really was on his last leg - although that is a bit overdramatized, he wasn’t that stupid. but you get the gist of it.
but to say that he wasn’t as ecstatic as he would’ve been years ago was an understatement. sure, he hadn’t given up perusing the goal of dominating the wizarding world. which means hypothetically, he should be shaking in his boots at being able to persuade and brainwash the young minds of his students. but after being put through the ringer with actually raising kids, two devilish kids, he would’ve been happier being rejected once more.
now, he can’t even escape them. now, he has to see both of their faces almost everyday of the week. because even if they don’t have defense against the dark arts, they’d find a way to bother him.