I just want to use this post to point out that we are talking about fretless bass here, not fretted. Note that I added the bold underlined italics part, above, to the comment I'm quoting.
Regarding the criteria for what we are supposed to be focusing on.... this commenter said that we're "not supposed to be focusing on finger position but on making the note".... however, on fretless bass, finger position dictates if we are playing the note in tune or not. Therefore, we literally MUST focus on finger position on fretless... not so much on fretted if you don't want to. But on fretless? Finger position is critical.
I'm just using your post as a foundation for a summary of my earlier thoughts, which is this:
Playing in tune is just as important as playing on time. Being in tune is part of making music. Playing out of tune gets people fired from recording sessions (or black-listed to never get hired again from live gigs).... I watch it happen regularly.
Now, if we are not in a critical gig where tuning is super important - that's fine. Playing in tune has always been critical in the music I've made and for those who I have performed or recorded with. Some of them are exceptionally picky, where fretless is literally required because the tuning on a chord required the bass note to be a few cents sharp to mesh with the brass, or whatever.... because tuning is not mathematically perfect on fretted instruments. However the best way to REPEATEDLY and RELIABLY accomplish such minute tuning adjustments on fretless bass, from my own experience, is with a lined instrument where you can clearly place your finger on the exact spot over and over again, even if that spot is not directly stopped at the edge of the line.