If bitcoins goal is "p2p electronic cash" as defined by the white paper, then yes, it is an exploit/attack. No one foresaw Ordinals & Inscriptions. It was an unknown possibility for years so did your devs fail you?
You keep repeating devs are trusted 3rd parties without showing me how if it can easily be forked. We already have precedence that disputes what you are saying.
Speaking of trusting 3rd parties...If Bitcoin ossified today, 99.9% of the globe could not self-custody L1. No, don't say LN, it would still take a lifetime to onboard the world with a single tx each. The future of bitcoin would be Paypal 2.0. Trusted 3rd parties are only okay if it's on bitcoin???
And we aren't even talking about future L1 tx fees