Those that love the work they do don't burn out, because every moment working on their projects tends to be joyful. I personally hate working with people who hate the work they do, and I look forward to them being burned out
You can love what you do but if you do more of it than is sustainable because of external pressures then you will burn out. Enjoying your work is not a vaccine against burnout. I'd actually argue that people who love what they do are more likely to have trouble finding that balance. The person who hates what they do usually can't be motivated to do more than the minimum required of them.
Also this is one of a few examples I've read lately of "oh look at all this hard work I did", ignoring that they had a newborn and someone else actually did all of the hard work.
I don’t delight in anybody’s suffering or burnout. But I do feel relief when somebody is suffering from the pace or intensity, and alleviates their suffering by striking a more sustainable balance for them.
I feel like even people energized by efforts like that pay the piper: after such a period I for one “lay fallow”—tending to extended family and community, doing phone-it-in “day job” stuff, being in nature—for almost as long as the creative binge itself lasted.
I think there are a lot of people that love their craft but are in specific working conditions that lead to burnout, and all I was saying is that I don't think it means they love their craft any less.