Frankly, no, it's not a codeword for unpaid overtime, it means "you will likely just make everyone depressed with your attitude."

You don't need to be passionate about insurance, but you need to be able to show some enthusiasm about building software for insurance, which likely has a lot of exciting challenges (in addition to 90% boring work, as does almost any job). You don't need to be passionate about web agencies, but you need to at least understand what's cool about working at an agency (in addition to what's not). Finance is "boring" to you? There are tons of interesting tech challenges in finance. If you describe every job as boring then the problem might be you.

Nobody is going to hire you just because you can code if you have a negative attitude about what everyone there spends their days doing. Why would they?