There's the clear inequity under current rules that one byte of data in an OP_RETURN output is worth 4WU and one byte in witness data as exploited by inscriptions is only 1WU. If you want data on the blockchain to be treated equally, current rules simply don't do it and I consider this a fault/bug and/or ongoing exploit.
But from the viewpoint of the Ordinals/soon Runes users, if they have paid the fees and they're transactions are following the consensus rules, are they truly "exploiting" the system? It's not their fault it's there. They're merely using it because the system allows them to. Plus if it wasn't Casey Rodarmor, it would be another developer that would use this "hack/bug" and make something from it.
I'm not so much following discussions of Core devs, but frankly, my perception is a disturbing unwillingness to tackle this weight unit inequity.
I believe that they should be careful. It might start a hash war again.
I don't need to like what's "inscribed" to the blockchain, it's not my business to judge or censor. Bitcoin is not made to judge or censor.
I don't like it too, it's making on-transactions a little more expensive to use for plebs like us. But what can we do? Literally ANYONE can use Bitcoin the way it allows us to if we pay the fees and follow the consensus rules.