That's par for the course for technically orientated roles. I was labelled 'defensive' and denied a pay increase because a business development executive wanted to make our documentation dynamic based on user access, and I pointed out it was difficult to find a solution when users can have over 400 access permissions, which varied depending on country, and our documentation was 900 HTML pages, some of which were equavlent to 200 A4 pages.

If you are the most knowledgeable person then you get blamed for their bullshit fantasies being impossible or unwise (or illegal)