Is there a way to relabel Lucko from "Hero Member" to "Clueless Idiot"? <.<
This is by design from the beginning. If you don't like the way bitcoin is designed, you should use something else. There is no way to change it. There is no way to force anyone running a full node to mine or relay any specific transaction.
No you need to change it to do that... If you don't it will not reject valid transaction. You need to add so-called antispam to it and say this in a valid translation but it is not valid for me. And when a big pools and nodes start doing this and that is blocking big wallets providers it is a big problem if they don't tell you what new rules are... this is practically unannounced a fork...
No, this is what Bitcoin has always done by design and also by default since 0.3.19 released by Satoshi.
Policy is not a network fork in any sense.
However, Bitcoin has not done blacklisting, that is what you do.
Bitcoin has done prioritisation based on non-blacklisting rules e.g. transaction confirm age, fee, transaction size, etc.
It doesn't single out addresses of casinos or people you don't like, that is what you do, it is random with regards to addresses, companies, people.
Though your blacklisting is even worse, since it also matches addresses that aren't on your blacklist due to not being a 100% match check.
Your blacklisting is actually the same as
Bystander: "Hey you shot the wrong guy!"
Luke-jr: "Well he looked similar, so he deserved it."