If y'all want total BTC supremacy and an accelerated demise of alt coins, smarter capabilities are simply a requirement.
Ironically, I think adding these "capabilities" makes BTC vulnerable to censorship and opens the door to cooptation by bad actors.
For instance, it's quite simple to see how a bad actor like governments and/or their bank cronies may require that all BTC within "their" jurisdiction be filtered through some sort of covenant that heavily conditions the future use of the UTXOs. If a UTXO doesn't come through that funnel, it becomes "illegal". Expect all those MSTR and ETF UTXOs to be immediately funneled and a de facto soft fork to happen.
My opinion is, this is the sort of extremely undesirable consequence of idiotic maximalism, which as I said, I find quite ironic.
Because alts are perceived as a threat instead of as a complement, and because idiot maxis want BTC to monopolize all spaces and functions, they will inevitably introduce all the bad potentials too.
I say let alts take care of "smart" and unsafe stuff and keep BTC dumb and safe.