Implications of OP_RETURN changes in upcoming version v30

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Hello fellow Bitcoiners and node runnersAs you may know, there has been a debate around the upcoming release of Bitcoin Core. I hear the arguments against it and I agree that Bitcoin is money, not a storing database, and strictly only monetary data should be on the blockchain.I still find it hard to understand the argument on favor to this change. As far as I understand the OP_RETURN will be relaxed from 80 Bytes to 100k bytes, allowing the storage of arbitrary data, like images and even small videos. Why ?I hear often "Arbitrary data is already been placed on the blockchain", but then why the complacent attitude towards it ? and not fight the spam instead ?I also hear the argument "Blocks are empty" so Miners need generate revenue. To which I also respond; Bitcoin mining is a free market and the difficulty adjustment helps miners set their output accordingly to balance their electricity bill. They could partially set their output off/on.So is this changed being pushed by people who want to put a storage business model on top of bitcoin, like the altcoins do ?What does will affect Node runners (like me) who don't want to store dumb JPGS and possible illicit material on their hard drives.I am not the ultimate expert on Bitcoin neither a noob, so I am be wrong on some concepts, thats why I white here to clarify it.Thank you in advance