It's not a matter of protecting the rights of guilty people or not, but determining how much to protect them. Every procedural protection has a cost. If a procedural protection might be invoked by a person who has a 10% chance of being innocent, then maybe it's worth the cost. If it's more likely to be invoked by a person who has a 1% chance of being innocent, then maybe it's not. Looking only at media reports gives you a distorted picture of what those probabilities are.
> The trope here is the suggestion that criminals are getting off on technicalities.
I didn't say they were getting off on technicalities. I said they were trying to get off on technicalities.
"Better to let a 100 guilty men go free than 1 innocent man go to jail" makes for good rhetoric, but even such flowery language implies a point at which its better to let 1 innocent man go to jail than let a certain number of guilty men go free.