Sorry for the late reply. To your last point, I agree slightly as well but my rebuttal would be that each person chooses how much and at what level to particip

Sorry for the late reply. To your last point, I agree slightly as well but my rebuttal would be that each person chooses how much and at what level to participate in a community they are in and which sub-communities they identify closer with. I can imagine a person being proficient and working in any language without the need for them to be involved with the community at all, or if they do need to interact do so in a read-only matter.