> That's all very well, but often people haven't thought of whatever you might tell them.

I don't think the point was, "Don't tell them about things that might help them." I understood it more as, "Tell them things, but do it in reference of what worked in your experience. Then let them decide whether that might work in their experience."

Before: "You should try (this thing). It's awesome for (whatever it does) because (x, y, z)."

After: "At (my place), we use (this thing). It's been great for us at (whatever it does) because (x, y, z)."

Basically, you're removing the implicit assumption that you know better than the person you're speaking with about what would work for their business.