I know this has been answered now, but as someone who worked with a lot of Flash artists for animation back in the day... I think what you're talking about is the way it outlined all your ink strokes into outlined vectors as you drew them. This was something I always found weird coming from Illustrator, but Flash animators absolutely loved the way it worked.
The artist we work with now does all his stuff on an iPad with a pen, at super high resolution in pixels, and then converts the pen strokes to vector as needed. The effect is great. It has its limitations just like Flash did (it was very hard to change brush strokes with hundreds of vector points in Flash - it's very hard to get exactly the right crispness without too many vector points when going from raster to vector for an iPad drawing). But as a workflow for an artist who wants to use a lot of different brushes and paint anything on the fly, I think it's worth the clean-up. If you have a graphics department who can clean it up into vector, like us, all the merrier. But don't hobble your creative talents just because the tools changed and/or got worse. Go full painter and then make it work for web, print, animation or whatever format you need afterwards.