This sums it up quite well. Democratic leadership flatly does not want to impeach him. They’ve slow-walked their already slow-by-design plan of taking the administration to court when it refuses to honor subpoenas. Pledges to sue the administration over the president’s tax returns have so far been empty talk. Nobody says a thing when the president injects himself into requests that former staffers—people whom he no longer has any official capacity to compel to do anything—testify (psst, that’s also obstruction!). Even the blatantly obvious step of having Mueller testify before Congress has taken them months to commit to and schedule, when it should have been done the day it became clear that Barr wouldn’t release the full report.
Meanwhile, Pelosi and company are banking on the notion that the president is so self-evidently terrible, he’ll lose in 2020, and we can finally get back to business as usual. Y’know, the exact same thing they did in 2016, which worked out so well for everyone involved.