I find that change in how we perceive Flash, and what we remember about it really interesting. In these “professional” communities (among the big brand agencies making The Flash Website), games were almost an afterthought. Flash’s production use, and popular industry use, were these popular, rockstar designer, high end and experimental online experiences. It was at this point too that a lot of pioneering for accessibility was taking place. Ideas for how to merge immersion and accessibility were being explored. I do not exaggerate when I say that these were hugely influential websites. People became famous from making them. They would make or break careers. They were talked about and excitedly shared the same way you would share and talk about games today.
A cringey example for various retroactive reasons, but does anyone remember J. K. Rowling's old website?