"[inside] the course of a commercial activity" "Commercial activity is understood as providing goods in a business related context."
secondary self-promotion, donations and ads are imho not "providing goods in a business-related context". Paid consultancy and selling tutorials might be though, But I assume that judges will rule on that if it comes to it and I assume that they will set some monetary boundary to which this still counts as "outside the course of commercial activity".
If "business-related" means: "what contributes to earn you money", then they are. The boundary is typically not the amount of money, but whether there is an intention to make a profit over a longer period of time.
So if you have a permanent Website of your open-source product to promote some other product or service, or ask for donations or put ads on the site, you intent to make a profit out of your open-source product. (Almost?) every possible answer to the question: "How can I generate revenue with my open source project?" describes a business related context.
secondary self-promotion, donations and ads are imho not "providing goods in a business-related context". Paid consultancy and selling tutorials might be though, But I assume that judges will rule on that if it comes to it and I assume that they will set some monetary boundary to which this still counts as "outside the course of commercial activity".