Frodo's almost two now and much better! He'll occasionally have a taste of some of our furniture, but is quick to listen when we tell him to cut it out and encourage him to select one of his (many) appropriate chew toys instead.
While most dogs chew more when they're teething, it's a natural behavior for dogs at all ages. Some dogs like to chew more than others, and it's a way they naturally self-soothe or relieve anxiety or boredom. My goal with Frodo was always to help him make appropriate chewing choices, not to stop the behavior altogether, and he'll likely need and want a selection of safe and appropriate chew toys his whole life, especially since he struggles to settle down and relax on his own. In that way, chewing is a huge help! If he's antsy or we know we won't be able to get his usual amount of exercise and training in, we can offer a stuffed, frozen kong, bully stick, raw meaty bone, etc. to help him get some of that energy and frustration out.