Article says "The base pay range for this role is between $138,900 and $256,500, and your base pay will depend on your skills, qualifications, experience, and location."
The base does have a quite wide range, I assume that's the range for a few different levels. Still, you are roughly looking at a TC starting from $230k all the way up to $400k and more.
"Niche space and serious talent" doesn't necessarily translate to higher levels or salary in a company. It all comes down to how much resource an organization has. (I wish my employer actually understood how "valuable" I am and that I achieved things very few in my company could do, but I am not betting on that or the company.)
All other comments here are useless and a waste of your time.
If the talent is too niche, however, the buyer might lowball the seller because they predict the seller will not be able to find a better offer.