It can both be true that flash was a security disaster and also was the basis of many successful startups and indie casual game developers.

I have huge amounts of nostalgia, from when my parents bought me a version of flash from my birthday to kickstart my whole interest in programming, to building animations and games for Albinoblacksheep - Without flash I would never have learned to code.

So yes, some people have nostalgia with no rose tinted glasses, and I would like to think I have a clue about technology.