I think the "popularity" is still there, the pond is just bigger and it seems more niche compared to the rest of gaming as is such with Sim racing and the like. Perhaps even more people play these games now since there are so many titles and I think the fact that they are often on console now proves that. That said, I lost my own interest in grand strategy cause they are to hard to keep a game going, start something in Civ or Stellaris and you leave it for 2 or 3 days, it's extremely difficult to know what you were at. These games are for when you have a couple of weeks and you can hop on them every day, I'd hope they fix that in the future and make it more accessible with AI that helps keepyour games going over a longer period. These days, my strategy games go no further in complexity than something like Fire Emblem 3 houses, Two point hospital, frost punk and the like. They are just complex enough to have a similar experience yet not so complex it's like being a manager of a real life business. You can pick them up and put them down for a week and remember exactly what you were at. I fucking love Two point hospital, it's so, so much fun. I hear a unicorn Overlord is great too and hope to play that soon although I'd like an option to fast forward through the battles playing out.