Space Exploration goes out of it’s way _not_ to make things pointlessly grindy.
Your definition of grindy is not my definition of grindy - maybe "pointlessly" was a little harsh on my part. It's cool though - different people have different opinions. I have built vanilla bases large enough to have a fairly significant amount of SPM so I am pretty well versed in using circuits, trains, etc.The other issue is that Angel's is kind of an incomplete mod by itself, it relies on something else to actually use all the new things it makes, and that other one is Bob's [1]... and Bob's is very much complexity for complexity's sake. Most of the vanilla items in the games are instead have extra dragged out production chains for seemingly no reason other than to make things more complex, and the modpack has evolved by finding one of the few things that hasn't been touched yet and complexifying that yet further.
[1] To be clear, Bob's predates Angel's by a lot, and Angel's was largely developed to create more interesting ways to make the things that Bob's added.
I mean, sure - once you get oil and flame turrets it is basically game over for biters and that can get boring pretty quick if you always rush straight to it.
Edit: Also trains. I don't know why but I can just play with trains for hours on end in Factorio.
I even tried some of the full blown mod packs like Seablock, Space Exploration and Krastorio2 to extend the base game. However, they all seem to be designed with this underlying theme that you should challenge the player by making everything pointlessly grindy.
I really haven't played much since but I'll probably give this expansion a try.