I also don't think taproot is what enabled the current issues as much as segwit, but what do I know?
Considering how this attack has become possible by exploiting an oversight in the Taproot script validation rules, this is a Taproot related issue not a SegWit related one.
Is that what made it possible? I'll admit I haven't looked into the technical aspect of this as much as I should have, but I don't believe what you're saying is true. From my understanding (and please feel free to correct me if I'm wrong) it was segwit that enabled this "exploit" but it was taproot that made it so cheap it was feasible to engage in.
So from my perspective, the only way I could get behind a boycott of BRC-20 would be to also remove the Lightning Network, which I believe is guilty of the exact same crimes of Ordinals, but since it is patented tech by Blockstream and Blockstream basically runs Core, we are all just supposed to blindly support it.