That would certainly emphasize the dynamic nature of phenomena better but do people really think that things are unchanging? I think everyone realizes that things are transient. IMO people hold onto things not because they think they are stable but because they don’t know what else to do. If a person is drowning in the ocean you can hardly fault them for grabbing onto a leaky boat. They know it won’t last but - got a better idea?
And so if the Buddha has a better idea – he first has to get people to stop relying on temporary fixes. It’s like a dog pressing against in inward opening door to get outside. You first have to get it to step back from the door so you can open it. Buddha has to get us to first stop chasing after these fleeting unreliable phenomena before we can develop the path. The point is not to get caught up in discussions about whether these things exist or not – but rather to see that chasing after them doesn’t solve the problem of suffering.
Anyway, this is how I see it. You know, impermanence isn’t always a bad thing. If I have the flu or a broken leg I kind of like the idea that these things are temporary. But of course, I don’t sit around thinking ‘Oh, if I only had the flu, everything would be so much better’.
If you are saying that when we see or encounter something we infuse or project onto that phenomena our own thoughts and feelings – and mistaken this hybrid for something ‘out there’ then I agree. But as long as dream bullets put dream holes in dream bodies – pardon me for attending to them as if they exist.