I am an immigrant, and not "white" depending on who you ask. I was easily able to travel between schengen countries without having my ID checked ( I am lawful EU citizen). So in answer to your question no, border controls are not tight. Depends on the day.
HAVING said that I also agree with you that EU borders ARE mostly controlled.
I only saying this because I dont like accusations being thrown around, as it inhibits public discourse the ability for poeople to learn vis discussion, EVEN if he sounds like a nutter.