First, let me ask you something.
Really look like this?
No It doesn't. So stfu. Stop saying its cartoony and looks like World of Warcraft.
Do you think ESO will crash the Elder Scroll series?
If you said yes, you were sadly mistaken.
ESO is not being made by Bethesda, which can mean two things:
A ) It possibly wont be a buggy pile of horse-crap
B ) It has no relevance to the main series, and will not effect future titles.
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On a side note, what I've seen of ESO isn't lorebreaking whatsoever. The team has worked in-depth with the creators, and using all lore sources from the games to bring about a lore-friendly, cool game world.
So please, If you have something negative to say about this game, keep it to yourself.
You're just going to buy it anyway.