As I understand it, this second complaint is not against the original company, but against the government authority that handled his case.
The former is the one he seems to be currently taking to task for failing to follow the law, the latter is the one that meaningfully handled the case.
https://noyb.eu/en/gdpr-rights-sweden "GDPR Rights in Sweden: Court confirms that authority must investigate complaints. So far, the Swedish IMY has taken the view that users don’t have party rights in GDPR procedures."
https://noyb.eu/en/noyb-takes-swedish-dpa-court-refusing-pro... "IMY frequently just forwards a complaint to the company that illegally processes personal data - and then immediately closes the case without investigating." (no decision on this as far as I know. A bit surprising since it has been almost 2 years)