This was on page 1 of google for "steele dossier", and the title is "Why the Discredited Dossier Does Not Undercut the Russia Investigation", so it seems to be pretty widely accepted that it was a bunch of nonsense.
I think it's worth noting, though, that saying its "sourcing was thin and sketchy" is not the same thing as saying it was "a bunch of nonsense." Many of the allegations in it could, of course, still be true even if poorly sourced.
> Was the dossier a reliable source of information?
> No. It has become clear over time that its sourcing was thin and sketchy.
https://archive.ph/2fHH5
This was on page 1 of google for "steele dossier", and the title is "Why the Discredited Dossier Does Not Undercut the Russia Investigation", so it seems to be pretty widely accepted that it was a bunch of nonsense.