"Cause" is a funny thing.  The inventors of the internet itself "caused" Ordinals just as much as Bitcoin devs did. People can use things in ways that were never anticipated.  You're using the Internet to spread misinformation and foolishness, for example.

Are car manufacturers responsible for "fixing" cars so that people can't use them to commit vehicular manslaughter?  Surely the manufacturers "caused" that, right?   

If you made something and then someone used it in a way that you never conceived it could be used, is it your responsibility to change the thing you made?  And then are you also obligated to "fix" every other possible way in which they could use it for some other purpose?  Are people not free to use the thing you made in the way they want to use it?  Is it your place to determine that?

It is not the developers' responsibility to police the globe.  First and foremost, it's not remotely practical to envision every way in which someone could abuse the protocol to embed crap.  Second, if there were a way to lock the protocol down to prevent people from using it in unforseen ways, it would be far more difficult to maintain and develop the code.  And lastly, Devs have no interest in being the "thought police" and dictating to others what they can or can't do.

Please stop buying into the abject idiocy some people are talking about Ordinals.  You can't "fix" human propensity for greed and selfishness.  It would be a fool's errand to try.