I do not see how I was being rude, unless it was my use of quotations around the title you claim.
> I'm a human being ...
I did not doubt this.
> ... I'm a very experienced product manager and engineer ...
Again, if it was my use of quotations which you found to be rude, then I do not know what to say about that.
> ... and the way you are behaving sucks.
I respect your perspective and support your right to express yourself. And no, I do not think you are being rude by doing so.
> Assume I'm still right ...
Why would I? You responded to:
>> This is a site full of developers who are convinced that "proper software engineering" is 100% of what makes a business successful, and everything and everyone else is useless.
With:
> As a technical product manager, this 1000%.
Finally, you write:
> ... you might be able to learn something from someone else.
Maybe you can learn something from someone else as well.