@Luke Dashjr @Unhosted Marcellus
Why insertion of arbitrary data is an action which should be discouraged? It is because it threats with the most important feature of the Bitcoin System and that is “node decentralization”. Incrementing the operation cost for a Bitcoin regular node (aka. archival-full-node) reduces the adoption of people to run one (running a node does not provide monetary profit; fact which appeared after the separation of mining activity from the original “Bitcoin node”). Therefore, taking into account, that nowadays no monetary incentives exists running a node and, that it represent a resource cost running one, each marginal cost increment has a potential consequence of marginal node decentralization reduction. (Relaying on the technological development and production in the field of solid state storage devices is not sufficient since its rate is not guaranteed to be gather than the fiat dilution rate and the merchant and producer adoption of bitcoin as payment probably would take some time; and that adoption would depend on the Bitcoin regular node decentralization).