I'm not naive (or arrogant) enough to think I know everything my kids are thinking and neither am I suggesting their lives are 100% perfect but all of them (on the spectrum or not) are all pretty forthright, confident adults. When they were teens they of course went through some shit related to their being autistic, but none of that was because they were autistic, it was down to how other people/situations made them feel because they were autistic. I'm as sure as any parent can ever be that I've never detected any kind of prolonged resentment or unhappiness at the fact of their autism.
We never taught them that 'autism is a superpower' because it isn't. Sometimes it has advantages and sometimes there are disadvantages and describing someone elses life as superpowered puts an unrealistic expectation of happiness and accomplishment on them. By the same token, neither are their lives a ruin and my life as their parent most certainly wasn't ruined.