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 int

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.