This is something I have noticed on a fairly regular basis, and this is a recent example, where the questioner starts by saying "I'm working on" and ends up asking "How do we...?"
Can someone help me with this circuitry? I am not an electrical engineer. I'm working on a brain/organoid computer interface system . . .
How do we connect the cyclone . . .
Is it some cultural thing? Is there a mechanism to it, like that if others are included they feel more inclined to help?
The reason for the shift is very simple. In the first paragraph the writer is introducing himself (or herself). Explaining who they are. So they use the first person singular - "I am not an electrical engineer." "I'm working on a computer interface system".
The second paragraph is asking how to do something. But there are many people working on the project, and it is not necessarily the person writing who will be doing the work personally. Several people may work together on the task. So the writer uses the first person plural. "How do we connect the cyclone ...". They want to communicate that it will be a team doing the work. The responder may want to tailor the advice to that fact.
It's also possible that the writer uses "we" to mean "a generic person". Traditionally the pronoun "one" is used for that, but (as WeatherVane says) that sounds pompous, if not downright royal. "You" is typically used instead, but sometimes we say "we" to mean "people in general" (see what I did there!). In any case it's still a switch from telling the reader about myself to asking how many people/people in general would do something.
