Appreciate some input on spark plug reading

The most dangerous thing is someone with a little information who makes incorrect assumptions from that information. I regret this already, but answer me one simple question. How does the presence of lead in race fuel not change the appearance of the plug compared to an unleaded pump gas? You know that the lead lets unhardened valve seats survive by cushioning the seat by COATING the seat. This is more of a rhetorical question. I listen to everyone, but I haven’t heard a coherent thought from you yet.