From my own perspective and from those that actually do race off and online and that actually have used S3 guess what? It is just as much fun as its always been, and Rockingham is a welcome addition and quite unique for LFS.
I race AC Pcars DiRT and when I have time play & many other games, all are fantastic in their own right just like LFS.
I don't play WoW, or Iracing for many reasons, should I go there and have a go at the development team and community cos I don't play or enjoy it?
What makes this release special for me in similar vein to what EeekiE said, I myself am looking to get a trackday @ Rockingham next year on my bike with some friends and family so this news and opportunity is such a bonus
I think its brave choice to release S3 and welcome further updates regardless, don't let the negativity get to you
Now if you could just add some motorbikes devs +1
life is but a dream to fulfil