Using a trademark as a noun is automatically genericizing. Capitalization of a noun is irrelevant to trademark.
Even Apple corporation says that in their trademark guidance page, despite constantly breaking their own rule, when they call through iPhone phones "iPhone". But Apple, like founder Steve Jobs, believes the rules don't apply to them.
That explains why Steve Jobs never said “buy an iPhone” or “buy the iPhone” but “buy iPhone” (They always use it without “the” or “a”, like “buying a brand”).
Even Apple corporation says that in their trademark guidance page, despite constantly breaking their own rule, when they call through iPhone phones "iPhone". But Apple, like founder Steve Jobs, believes the rules don't apply to them.
https://www.apple.com/legal/intellectual-property/trademark/...