I've heard that for years; but has anyone actually, you know, tested this on a dyno? A brief web search just turned up ad-laden pages talking about it, with no evidence that it actually works. My argument against is that by the time the spark plug fires, the intake valve has long since closed, and the air/fuel mixture has been swirling around and can reach that spark just fine, whether the electrode is "blocking" it or not.
Not that it matters, but ex-mechanic here, so I do have some idea how an ICE works.
Ive got two actual personal encounters with them. Long ago someone who talked up his souped up motorcycle/gokart engine (with reason) explained it to me, shortly before that engine died wide and energetic. That was fun, and may have had other causes :)
Then my wife paid $1,800 for a "packs & plugs" job at a dealership, when our usual guy was aware that our Honda Insight had that issue and needed that attention and said he'd have charged $200 for it. Individual part numbers for 3 plugs. But still. She was out of town and they talked her into "it's sputtering but it could blow up at any moment!"
Not that it matters, but ex-mechanic here, so I do have some idea how an ICE works.