Many of us have speculated for a while, that boosters would become necessary. I don't think this should be surprising or unsettling news.
If they can demonstrate improved efficacy against mutating strains, then I don't consider it a money grab either.
But I do see it as evidence that long-term, we're just going to have to get used to this virus living among us. Eventually its novelty will wear off and it will affect humans less dramatically with each passing year.
Just by sheer numbers, there's no way to control a virus that spreads this easily.
Globally, there are billions of people that will never have the means, capability, or access, to get any vaccination at all. Billions.
The virus will continue to spread and mutate with that population, and will subsequently continue to get reintroduced into the vaccinated population. Because there's absolutely no way to ensure that those populations remain isolated from one another, in any long-term scenario.