I don't know how you arrived at the conclusion that miners are behind ordinals. I don't actually believe that to be true only there are substantial evidence to support that. What I think is that miners just saw opportunities in it and are benefitting accordingly. They may not be behind it, it could just be the handwork of people that want to leverage on the popularity of Bitcoin to scam people of their money in.exchange for digital jpeg.
True, there's no proof on telling that those miners are behind with those spam transactions on which they are really that driving the fee price or value to the roof.
Just like on what others been saying that there's no proof and there's no solid evidence but pretty much sure that these minders are really that happy on whats happening
considering that they are earning more, but now as we can see that the network condition is slowly going back to normal and this is something that most
crypto people do really likes on which it is really that pain in the ass when we do speak about high transaction fees.