Funny - the ocean label errors you showed in these images don't appear when I try to recreate them. Somebody appears to have done some nice Photoshopping or perhaps it the errors arose from slow update of the different map drawing layers due to a poor network connection... 🙄 Where I am in Scotland, the new map app is more accurate than the old one and, in contrast to some reports, the satellite views don't show clouds. No doubt the accuracy varies by location due to variation in the quality of the data Apple was able to buy, but the new app suits my needs very well.
Having said that, of course if Google offered a free map app I would also download that. What is it that people on this subforum always say - oh yes, now I remember - competition is good. The more Apple succeeds, the higher the bar for maps apps will go on all mobile OS's.