I have a similar opinion. I have seen this news in other websites and I think the article sentence should be approached in other way.
- First Sid is not in his 20s anymore and he probably today has other games or genres he likes more other than complex strategy games. I speak for myself i used to love Starcraft, AoE and RPGs on my teenager years, nowadays i can only get myself to play action games. People change over time, plus some games need more time to get them to work than others.
- Considering the whole video game market. Games like Civilization are still played by many people, but not a huge hit like Fortnite, COD or League of Legends. There is no question there are still people looking for complex games: See Dota2, Escape from Tarkov or even BR games but games like Civilization are still hugely profitable ? I doubt, and video game publishers of course are interested in high profitability.
Lets not forget about the mobile market where a huge number of people like to play mostly casual games, for natural reasons.
- As he said, back in the day it was the perfect game to be done in that time. PC gaming got better and people were looking for an immersive and complex game. Nowadays there are several titles which offer the same.