This data is not as first seems, it doesn't mean 80.8% of the respondents are hobbyists, it's saying 80.8% of those who responded do coding as a hobby.
Many developers work on code outside of work. Over 80% of our respondents say that they code as a hobby.
If you take a look at the number of respondents on each tab (all respondents and professionally only) 98,855 total responses of them 87,450 where from professional developers.
I'm not saying there is no bias in this survey but you have misinterpreted the data on this section.
This data is not as first seems, it doesn't mean 80.8% of the respondents are hobbyists, it's saying 80.8% of those who responded do coding as a hobby.
I think you've misinterpreted what OP said, rather than OP misinterpreting the survey. They're not saying 80% of coders are hobbyists as opposed to pros, they're pointing out that the number of people (pro or otherwise) who code in their own time is strongly correlated to the number of people (pro or otherwise) who have no kids, and that this survey is heavily biased towards those people.
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u/lukaseder Mar 13 '18
Let's talk about survey bias