It's bad in principle because he obviously engaged in insurrection and is ineligible but from a practical standpoint it's great news for democracy. A toxic Republican candidate who by the election will most likely be a convicted felon and quite possibly already in prison is pretty much a best-case scenario for the country. Turnout matters and nothing is going to dampen Republican turnout like the top of their ticket being a convicted loser. We could very well be looking at a historic blue wave this year.