Yeah I understand your point, and of course that must be factored in.
But IMO, based on all of the "official" stats of infection rates, effects on age and pre-existing conditions/immune-compromised patients, etc, and deaths...in comparison to the yearly "ordinary" flu...the response to this is way out of proportion. Also, there are some reports now saying things are essentially back to business as usual in China, although I have no idea if that is accurate or not.
But in my view, the only thing that makes a bit of sense about this is the idea that it may have come from bats...because the hysteria over it is batshit crazy IMO.
But as Al said, only time will tell.
Sometimes it's okay to just admit you're wrong.
Let's do some factoring in. Even just going by your infographic 3 months vs 200 years, that's ~400x. Of course you can argue the specifics but that's the general order of magnitude we are dealing with here. That 'blip' is already much more concerning.
Now let's talk actual numbers:
Whatever the Coronavirus ends up being, the "official" numbers right now suggest it is at least 6x more contagious than the "ordinary flu" (that means each infected patient will infect 6x more people than the flu does) and conservatively speaking 10x as deadly (meaning it kills 10x more people who are diagnosed with it than the flue does every year). This is a cumulative of information from a number of sources across the world, but I am using US numbers.
Flu in the US (2019):
490,600 - hospitalizations
34,200 - deaths
That's with a functioning vaccine in place for the flu. Let me remind you CoVID-19 right now does not have a vaccine.
Extrapolating the numbers, that's at least ~3,000,000 hospitalizations (which is a small fraction of actually cases) and the likelihood of millions of deaths.
Again, I'm not trying to say this or that about the virus and how you should prepare for yourself, but I'm just pointing out the misunderstanding of certain facts and maths in this case.