I’m not certain that this regulation applies to installed wood stoves, but rather to the manufacture and sale of new ones?
Hope it doesn’t, I’ve got a vintage Buck Stove fireplace insert in the den that my mom loves, works quite well, blower and all. Got an antique wood cookstove in the basement, spent $600 last year to get it back into working order, so it now works quite well. Fireplace with damper in basement, too. Three flues, solid masonry chimney. It gets used, no gas logs. I’d hate to lose that, or be forced into a lot of additional expense just to use it.
Others on the thread seem really certain that such a thing would be illegal on their part. In any case, it would be really hard to detect.