>... but those don't have the spike protein that CoVID has.

What does that mean? Do they not have similarly unique antigens?

A virus needs only a handful of genes/proteins to work, one of them is a "virulence" factor that binds to a receptor on the cell which starts the cell entry and infection process.

CoVID-19 is a much more dangerous disease than other coronaviruses because it has a spike protein that binds to the ACE-2 receptor on your kidney, heart, blood vessel, and yes lung cells. Other coronaviruses have different spike proteins that bind to different receptors and don't seem to kill people effectively as the CoVID-19 spike protein.

CoVID neutralizing antibodies target the unique spike protein so the fact that other coronaviruses don't present a durable target isn't relevant.

Yea, but if you include that information than you can't make a click bait headline that spreads fear

Calling this "click bait" is rather pushing the definition. How would you have titled it?

Doesn't it make it worse, from a fear perspective?

The spike protein makes it for virulent, but is also a "feature" that the immune response can attack. Double-edged sword really.