It's not the fact he 'wants to get Nintendo' which would be expected of any person in his position, it's the fact he's mentioned by name a venture capital firm affiliated with Microsoft along with the name of a person who works there that he's been communicating with in the context of market manipulation by pushing for Nintendo investment with the intent of using that investment to pursue to a 'mutually agreeable merger' negotiation, which he sees as more effective strategy than 'hostile action', indicating he's at least considered the possibility of a hostile takeover and decided it less effective than the alternative
This email exchange occurred very shortly after the named venture capital firm bought up over $1bn in Nintendo shares, possibly under his instruction
People aren't bothered by the words, it's the fact some form of action has already been taken and further action had been entertained, with the purpose of avoiding a takeover by pressuring Nintendo into selling through shareholder influence and by playing buddy with them to warm them up to the idea, a combined one-two of coercion and love-bombing tactics
The ending line of "It's just taking a long time for Nintendo to see that their future exists off of their own hardware, a long time... : - )" is the piss-icing on top of the shite-cake