I think the difference in our approaches is that you think there's a better chance of replacing him with someone who is open to that idea and who would win in November. I think we don't know anything about who that would be, their chances but that Biden could be pushed on his position.
I'm not afraid of trying something like choosing a president at the convention, as has been done in the past many times. Makes a lot of click-bait and will be unavoidable for voters to face, and learn from. We have 13 circuit courts; one supreme from each, limit terms.
Swapping Biden at this point would be an unmitigated disaster. I do not like him, but people who think you can sub out an incumbent POTUS 4 months prior to the election need to be serious.