To find a cow with a river start, it doesn't take 3 weeks. Maybe something like 20 or 30 minutes. Mapfinder best works for something like finding a high domination limit (Moonsinger and Dianthus wrote the program, as I recall, see the connection?), which you do manually and would take *much* longer if done manually. You can't just evaluate solely by mapfinder the value of a start, even for a 20k game where you'll use the capital. It doesn't give you anything concerning the second ring of workable squares in the fat X, where you might have 3 more cows, 2 hills, 3 jungles, 2 flood plains, 1 or 4 bonus grasslands, or 4 marsh squares. Nor does it necessarily indicate a river nearby a coast, near your capital, where you might move your settler to in a turn or two. I don't know how many MapFinder starts I've ended up throwing away at a glance as not having enough shields, having tundra in the second ring of the fat X, or something.
You can't tell anything about huts from MapFinder. On Deity level you have a 20% playing as expansionist to pop a settler from a hut, and you can't do it until the other AIs have a city up, nor have a settler in production.
Additionally, and I preferably would have said this sooner, the screenshot I gave doesn't so much work as a "proud" screenshot in terms of just what you can see there, but the game it represents. Plenty of players on these forums bashed Portugal as an inferior tribe, the weakest tribe, or something like that. I had played a decent Large Demi-God game with Portugal which partially overturned that notion, but the game where that screenshot comes from pretty much thoroughly does so. Expanionsist ends up useful in the free settler used to get the capital producing culture earlier, earlier commerce, seafaring ended up useful for extra commerce, early contacts, and Alphabet, the Colossus-induced GA helped produce culture earlier and helped pick up research... which meant faster research to the Republic slingshot, and probably implied I got the SGLs I did earlier also, and Carracks helped set up settlements on faraway islands. Maybe some other Seafaring tribes could have ousted Portugal by a turn or two in a 20k game in the same position and the same timing of SGLs (which wouldn't happen exactly, because of different research speed), but I doubt any other tribe could have.