[tacostakohashi]

Yeah I think you kind of have to.

You don't have to agree, just nod your head and smile politely. You can still do your own thing. You can ask for data, working examples, evidence, proof of concept to substantiate any wild claims. You can politely say, "that's a great idea, _you_ should do that!" or "I don't think I'm the right person to execute your vision here, but I hope you find someone."

Remember that they're probably well-intentioned, and acting in good faith. Trust them... to advocate for their own interests and priorities, which may be different from yours, which you'll have to find ways to advocate for yourself.