[throwaway81523]

I haven't heard that exact expression before, but basically agenda-driven speech, for commercial or ideological persuasion or whatever. See also: https://en.wikipedia.org/wiki/Motivated_reasoning

[AndrewKemendo]

I’ll wait for OP to respond in affirmative but I’m not necessarily agreeing that that’s what they meant.

By that standard then literally everything that is opinion based (ideological) is motivated reasoning