It might look nice, but trust me, that city midgame will be anything but stellar. Housing is one thing (and we see the city is penalized with -50% growth already; 3 housing for coastal cities + 1 from palace, so 4 housing; assuming the tiles being worked are bananas, whales and grassland woods amber) the most important thing is that 60-70% of the cities' tiles are wasted on water.You got a screenshot a few posts before that shows a coastal start with a coastal civ with plenty of production.
Different tiles have (and should) different yields. Sea tiles have food and gold, longer range traders and movement/los unhindered by terrain. You want production, you make damn well sure to found your city near some hills.
2 eras or so later, where you could've had a size 15 capital, you will end up with something that will struggle to grow to size 10.
And really, I rerolled so many times with Dido, and the start in the screenshot is way better than all my rerolls. That is a very rare "good" start.