The current transactions that put data in the blockchain are in a format BIP110 knows how to block, but it is possible to contain arbitrary data in the chain in BIP110 compliant transactions: it is an unending game of wack-a-mole that cannot be won. Fundamentally Bitcoin is an economic game theory outcome: Data inside blocks is valuable because it is immutable. This fundamental reality cannot be denied. The best possible way to put data in the blockchain is in OP_RETURN because it is provably unspeadable. Cores removal of the limit was in complete good faith for the best of the network!