In many cases, we can answer these questions either by searching or from experience with the various platforms, software, etc.
There is no reason to mark these as off topic. If we can't answer them because they are unclear, or they require knowledge only the developers would know, etc, we have perfectly good close reasons for those things already.
If people choose to come here instead of going to a site's support, it might mean they know they will get a good answer here, or they have already tried support and gotten frustrated, or they might feel like it is a good question to ask in a public space so others with the problem can also get help.
There isn't a real need to mark these as off-topic, as they are perfectly good questions for our site, and we have been able to answer many of them, helping a lot of people.
If you see issues with specific questions, flag or vote to close as needed, but not just because they happen to be helpdesk style questions.