I wanted to say this since climbing was added (I have totally forgot the name of whatever that update was) but WoM/AO is literally Breath of the Wild!!!
Think about it! Climbing, a temperature meter, 3 slots for your equipment, 3 slots for your clothing, medieval-ish timelines, NPCs, looting, destroying the environment, open world adventure games, these are all features BOTW share with WoM/AO.
In conclusion, Nintendo will sue Vetex because that’s what they do. I rest my case.