You can create a free US license and level a toon to 10. But all feedback options lead to the same team and you will not receive a personalised blue response.
Some previous US CS response though on this subject matter:
If they are automatically deleted (or blocked) they continue to find a way around until it isn’t. Certain words cannot be used to create an LFG ad. Also, unto a certain point it is not feasible to block words because that means you can’t even form a coherent sentence anymore.
They do. You noticed it yourself:
An infinite battle between the black market and enforcement mhm, old tale.