I suspect that the reason that describing D&D's play loop as "the players take actions to prompt the GM to provide more information" is controversial is because it's reductionist to the point that (IMO) one can reasonably infer implied ridicule.And, yes, acknowledging frankly that the majority of 5e play is the GM providing a world where the players take actions through their characters to prompt the GM to provide more information shouldn't be that controversial. Even if we put aside WotC APs, which are clearly this, the core play loop of D&D starts and ends with "the GM narrates."
It would be like describing PbtA games as: "the players take actions to prompt the GM to make life worse for their characters". Or, more broadly, describing all interactive verbal human social interactions as: "talking at people to prompt them to talk to you". These descriptions are, in some sense, "accurate", but they're so devoid of context and purpose as to appear derogatory.
I know you play and like D&D, so I assume you do not mean to ridicule it with your description of its play loop. My intent is only to share my perception of why such descriptions are controversial. At the very least, that's why I personally find such descriptions objectionable.