Does celebate mean virgin? I thought it just meant not having sex.

The Democratic candidate is chosen at the convention, which hasn't happened yet. What would a legal contest even be based on?

From the article you linked to:

Election law expert Richard Hasen wrote that there is "no credence" to the notion that the Democratic Party could not legally replace Biden on the ticket, as he is not the nominee yet -- the nominating process generally takes place during the Democratic National Convention.

I'm not ready to encourage this because anybody can get pissed off for any reason. There is very little that a politician does that makes everybody happy.

What's the difference?

Nope, our election system doesn't support it and actually has a spoiler effect because you end up tacitly supporting the other side by not voting for one of the two strongest parties.

There are other parties even in the US, but they are not taken seriously because they basically take away votes from the big party ideologically closer to them and so they are marginalized. Appropriately so given how FPTP works.

The election system is the real issue that needs to be fixed, and new finance rules around elections aren't going to make enough of a dent.

I mean here is some evidence: https://thehill.com/homenews/campaign/4470956-biden-trump-harris-newsom-poll/

Biden is the strongest polling candidate against Trump

Democrats have been winning important recent elections, no?

god must have hatched them from his vagina

Sensitivity to smells will dissipate over a short time. Your senses will pay more attention to novel stimuli, so your nose will eventually get "bored" of it and stop even noticing it when you are acclimated enough.