As I see it, the most important thing is that the accused be duly informed of their rights at the first opportunity in the process.
But even when that does happen, the interviews we conducted as part of our study revealed that counsel sometimes make recommendations to their clients that go against their professional code of ethics. They advise clients to make decisions based on efficiency and effectiveness or counsel's assessment. I believe Mr. Doyle spoke to that when he appeared. The accused wants a quick trial and a favourable outcome, so that can influence the accused's decision.