You mean, kind of like Cali did some time ago by giving small business owners a nice tax break and then later penalized them retroactively and assessed millions of dollars in taxes because their 'tax break' was too expensive for the State?
Yeah. Watch how bloody quickly their standards morph into something more revenue-enhancing once the new laws come into effect.
I don't think going after existing stoves or fireplaces is going to bring in much revenue. The real revenue is in electric power and fuels that they an tax. Obama wants electricity rates to skyrocket and that isn't to save the planet, but to get revenue to pay off his campaign contributors. The key to getting all the money is to keep people from buying new wood stoves. My stove is about $100 a month whereas propane would run about $500 a month even before the taxes Obama would want.
OTOH you have a point. These regulations are like gun laws, first they ban they sale of something but allow you to "keep" existing ones, then they turn around and ban the existing ones. IMO if they do that with wood stoves they would get enough backlash to lose significant political power. So while I am against their encroachment, it s the kind of political fight I would like to have.