Just like the previous default setting was not a hard control, neither has raising the default
limit introduced any sort of hard control against hiding arbitrary data in transactions. All this means is now more arbitrary data can be stored in OP_RETURN as well as hidden in other places like before. Core must surely realise that the majority of ppl are not techie/engaged enough to adjust their own node settings, so raising the default limit is effectively a consensus change of leaving the door wide open instead of just ajar