I doubt we are actually seeing the end of him though. While it is possible, I just don't see the Dems cleaning up their own mess. They have absolutely no history of doing so at that high a level. Some may make speeches and speak out, but if it actually comes down to an vote to uphold an impeachment in the Senate, not a single Dem is going to ever cross the isle in that fashion.
Don't worry, if some miracle of miracles does somehow come to be, Biden will be too tainted to be anything other than a place holding lame duck. If it looks like the Dems might actually go for an impeachment, the first indication will be that Biden steps down is replaced by a Dem that is not tainted by association with Obama. You see Biden resign, then yeah, it's the end of Obama, otherwise, don't waste your time thinking about it.
Further, with the extremely poor political memory that the voting public has demonstrated for a longtime now, the fact it is happening now probably won't even hurt the damned liberals in next years elections. As last years elections demonstrated, the voting public largely doesn't give a **** about these things. They want their entitlements and they really don't care if Obama and his crowd tear up the Constitution and use it for toilet paper as long as it doesn't take away the government pandering to their stupidity and greed.