If you use a convenience option, use the strips. If not that, use powder. They reduce container waste and shipping weight.
Also, better to lead your argument with your point, not shaming your audience. Maybe folks have mobility issues and pouring is hard.
Hmm at least in my home they’re comparable that I didn’t notice, but I’m fortunate that I wouldn’t notice unless the price is extremely different. There in a box like dryer sheets, which I don’t generally use.
They clean the same in my experience