the main problem with this is that with them doing it without asking or time to prepare all the people the guy knew where lost or have a problem finding him.
And the huy was seemingly not even a nobody but instead had a company so even more company contacts could get lost or customers wanting to directly reach out to him could sent private data to a 3 party (twitter) about confidential informations.

Secondly it says that the company can and will take over accounts when they have some reason, even if it is only the name.
That means the trust in the handle gets completly broken because it could be a twitter account in just a few seconds without warning.
So they have the power to take over an official governement or news account without warning and only leaving a reason. This is theoretical but if there is a news station with a handle like "xnews" i can really expect that it gets taken over in some time in the future.