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Luke may be a nut job. Perhaps Lopp is right to point that out. But from my point of view, it looks bad that Lopp spent the time to write that article vs writing why removing OP_RETURN is a net gain over potential negatives from removing it. Maybe I've missed all of his arguments? But, I'm not seeing it discussed in his list of posts on his website.

If he (or someone else) has written a nice article that lists the pros and cons of both sides and can show that removing OP_RETURN is a net positive then I'd be more convinced. Or, I should say, I'd rather run Core 30 but all this debate makes me question the update. Lopp losses points in my eyes for resorting to personal attacks vs spending time explaining the benefits of Core 30.

Does anyone know of a good article that fairly lists the pros/cons of removing OP_RETURN? I've seen what I think are fair discussions about NOT removing it, but I haven't yet seen any about removing it.

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So if I'm understanding things, folks in favor of removing OP_RETURN are worried about mining centralization because sneaky transactions are already happening and this will cause mining centralization. On the other side, folks in favor of keeping OP_RETURN are worried about storage of child porn and non-financial data. Do I have that right?

In the link you posted, the author stats that non-financial data will eventually get priced out of being on bitcoin. If that's true, then isn't the centralization of miners a temporary issue, as well?

Let's say that miners become centralized for a period of time. But then eventually bitcoin mining fees rip and non-financial data becomes untenable. At that point wouldn't miners start to decentralize? Or is the thought that once miners centralize it's the point of no return and/or that bitcoin fails?

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my understanding is that the problem with JPEGs on chain is the challenge of performing IBD & validation on lower quality hardware.

if I need to get a transaction to the mempool, how do I get it to the network if I can't IBD? only through some third party.

IBD on low-quality hardware should be prioritized for this reason. It's my understanding (please help to correct my failings as you see fit) that this is the reason the Knots crowd seeks to prevent a chain filled with spam.