Well there is nothing wrong with supporting GW. I, like you abandoned GW long ago because I couldn’t afford the hobby. Now I too play mostly historical and indie games. But I still like the art and some of old games like Space Hulk and Epic.
But like Andrew said above GW has always had great starter sets with tons of high production value components … but it’s designed to get you purchase a lot more expensive products down the line.
If you really like the models go for it.
If you have a lot of potential opponents it would let you play with go for it.
If you don’t mind using them for other games/settings and want to take advantage of the value go for it.
Otherwise invest in something else!