This–and TWIM jhanas in general–certainly involve the arising of the relevant jhana factors. People feel real and somewhat life-changing experiences of piti, sukha, equanimity… are those, due to limited concentration, below some critical threshold to earn the name “jhana”? Sure there are reasonable arguments for this position but it’s just a language game. Both strong and weak versions of these states are real phenomena that lead to increases in wellbeing.
Besides, it’s not even entirely clear that the earliest texts are actually describing something all _that_ much more concentrated than Nadia does, although the later visuddhimagga most certainly does, and those teachers certainly teach it.
I’ve heard some teachers contrast Sutta-jhanas to visuddhimagga-jhanas and I think that’s a reasonable distinction.