It rather seems the Mantle evangalists are hurt over that Mantle wont dominate and kill off everything else in the favour of an AMD controlled API and GPU market.
I think you are reaching when call suggest anyone here is a "Mantle evangelist" since I haven't read any comments that say "you should use mantle, or buy AMD cards." Some people like it, some people think it is has made an impact, and some people look forward to more games. Some people think it is worthless. That's ok, we all have opinions. But I ain't trying to convert anyone, and I doubt anyone else is. This is a message board. I think in the entire history of the internet, no one has ever been converted on a message board. We are just defending our opinions.
And NOBODY is "hurt over that Mantle won't dominate and kill off everything else."
A: It's still way too early to know the fate of mantle.
B: Those who use and like mantle are happy right now.
C: Those who tried mantle and are disappointed, are only disappointed because they didn't get the performance/stability they had hoped.
You seem to suggest that all of us "Mantle evangelists" are egomaniacs with open schadenfreude tendencies.
We are just gamers looking for better performance(within our budgets)