Knots would not work with those by default. One of the great things about knots is you can configure it however you want. You can set your OP_RETURN limit to 83 or whatever you need and still filter out other types of spam.

The biggest problem with core is they are trying to dictate to the network what node policy should be by default and taking away the ability to configure it.

The problem with the changes they are making are a seperate issue but just as important. nostr:nprofile1qqs8fl79rnpsz5x00xmvkvtd8g2u7ve2k2dr3lkfadyy4v24r4k3s4spz9mhxue69uhkummnw3ezuamfdejj7qg4waehxw309aex2mrp0yhxgctdw4eju6t09uqsuamnwvaz7tmwdaejumr0dshsu0ur8h has some great videos on this subject. Even if you disagree with him, at least hear his arguments.