There's a lot of fuss made about Thermion. Folks seem to think it's some kind of expensive miracle coating required by the new, expensive miracle jet when, in fact, it makes really good sense to apply it to all kinds of decks. As well as it's heat resitance, it's not particularly expensive, has excellent corrosion, wear and impact resitance, is easy to apply, has good friction properties and lasts for years.
So having to apply it to decks to operate F-35, Osprey or whatever is no great issue.
Here's how good it is. The picture below is from the excellent Aviation Leak article (30th August this year -
F-35B DT 2 Update: A few hours on the USS Wasp ) and shows where an F-35 landed on the edge of the Thermion coating. To the left is just the anti-skid base layer, to the right the Thermion coating. The difference is pretty obvious.