I can appreciate that it is an aggressive (arguably clickbait) title and can be off-putting, I think the reason there's a focus on programmers is because most o

I can appreciate that it is an aggressive (arguably clickbait) title and can be off-putting, I think the reason there's a focus on programmers is because most other professions will not need to ever know or consider most of these facts about phones ever. The focus on programmers is because virtually every point is about handling phone numbers as data to be processed and worked with, which is a fairly unique perspective that, as far as I can think, only programmers have. Most of the points are pitfalls that might trip up a programmer when working with code that takes a phone number as an input and needs to validate it. While I'll grant that your alternative titles are much less aggressive, the original title really isn't condescending unless you read into it as such, in my opinion. It doesn't say "all programmers", just programmers, and all points seem like fairly common misperceptions.