Apple charges $379 to replace the screen it says is durable enough to go naked. Apple's new VP of Hardware Engineering, Tom Marieb, just told TechRadar that seeing a screen protector on an iPhone makes his "skin crawl." His team spent years on Ceramic Shield 2 and hates watching people cover it with a $10 slab of tempered glass. The customer is doing cleaner math than the engineer. A cracked iPhone 17 Pro Max screen costs $379 out of warranty. A protector costs $10. If it prevents one crack…