In principle yes. But in practice, we are talking about nanoseconds; and I would very much like to see benchmarks/measurements showing anything that can be perc

In principle yes. But in practice, we are talking about nanoseconds; and I would very much like to see benchmarks/measurements showing anything that can be perceived by users. Also, this blocking cost is still orders of magnitude lower than network latency and blocking requests (even with a slow adblocker) will result in a noticeable performance boost while browsing the web.