From what I understood:
Bitcoin Knots is the conservative side, they want to do their best at keeping to Bitcoin exactly as it has been, a monetary network, by keeping the OP_RETURN, keeping validation power on the node, thus keeping the same institutional risk.
Bitcoin Core is the experimental side and want to change the nature of Bitcoin, removing the Bitcoin OP_RETURN and thus putting all the validation power on the miners. Some of the motivation for this is to allow more stuff to be written on the blockchain, including images, etc. Citrea it seems is one of the companies/projects that needs this. So there's also money behind this.
Bitcoin Core v30 can definitely change Bitcoin's nature and risk profile, and allow for institutional and legal attack vectors, like for example if people use pornographic or illegal images, which has happened before in a Bitcoin SV fork.
For me it's Bitcoin Knots for me all the way, everyday. If it ain't broken don't fix it. It's working perfectly, go find something else to fix.
Bitcoin Knots all the way. Fuck this, actually. Fuck the natural way this debate has been taking. This is not a trivial matter at all. Bitcoin is a monetary network and that's it.
Use the best tool for the job. Use other chains to do what you want. Don't fix what is not broken. Bitcoin is the first time we have good money. This is much more important than your bullshit technical ideas. Use Ethereum for that shit.