oh i get that entirely, and just for the record I don’t think it’s a simple task at all but I don’t believe it requires more than few people per platform. Probably wrong but that’s just my thoughts.
It’s the time it’s take to implement it over the amount of devs it would take up.
Although I’m a web dev, I have fairly little knowledge about the way in which iOS and Android apps are developed, however, in web there’s some already some fairly standardised method to help you build and implement a dark mode for your website, i would assume it’s vaguely similar for apps.
I hate it when people think it’s as simple as flipping the contrast because it is so much harder than that and the fact they’ve already had designers work on it do a good job in the one visual we’ve seen is a boost of confidence.
There was a great article by the lead designer from Stack Overflow on the efforts to convert their platform a while ago that’s worth a read if you can find it and are interested
Edit: Found the SO article https://stackoverflow.blog/2020/03/31/building-dark-mode-on-stack-overflow/