And their accounts are on the 
government Mastodon instance https://social.overheid.nl (also reachable via https://social.gov.nl).
Other accounts of Dutch goverment officials, besides @stasdigi:
- @MinisterBZK
- @staatssecretarisbzk
- @MinisterVRO
For similar gov instances in 
check: https://social.overheid.nl/about#:~:text=5.%20Zijn%20er,https://social.edps.europa.eu.
Hopefully, other governments will also join Mastodon/Fediverse soon 
Welkom!