> Are most of us secretly lying about how much we are working?
Yes, but I would venture it's the other way - most of us are probably working our butts off and thinking we make a decent wage for 40 hours a week when we're putting in 60 hours a week. I didn't really notice this until I had a family and started bumping into family activities. At first, I was really pissed off that something was getting in the way of work, then I reassessed by values and got pissed off that I was putting in that sort of time.
> Have I just been incredibly lucky and every boss I have had is too incompetent to notice?
Pretty much. It's likely the problem is systemic (your boss doesn't work either). One of two things are going to happen, by my guess. You are going to get re-orged when some efficiency expert comes in and they're going to apply arbitrary metrics which are designed to "accelerate delivery" or something. Since you don't do anything already, you can't meet those metrics. The good news is people who do work probably can't meet them either since it's designed to make people uncomfortable, so you'll be one of many getting a parachute. Feign indignation and leave with the herd.
The second thing that might happen is someone updates the tech stack in a significant way. This happens when consultants come through and a company tries to "buy the devops" or "buy the kubernetes". They have a vested interest in delivering a solution, so they're going to want to train people on the new thing. If you're not participating in the existing workflow in a meaningful way, it's going to be rapidly apparent that you're also not using the New Expensive Thing(tm). Since the New Expensive Thing is indeed quite expensive, there's going to be a lot of eyeballs on it, and you'll probably either get noticed for not using it or for being one of the people "not adopting the New Expensive Thing".
Of course the third option is you live in like Cornfield, Kansas and you're actually pretty cheap compared to everyone else across the country and so you're really not going to attract any scrutiny whatsoever. Who knows!
Best of luck, either way.