The mammoth is the big PR project but Colossal is working on a number of species, and the idea is the research will enable us to easily "de-extinct" or prop up the population of any number of species if and when they're in danger.
Maybe in theory, but propping up an entire ecosystem in collapse is well beyond Colossal's reach and incentives. This money and research would be better spent preventing the ecosystems from collapsing in the first place.
If we fix climate change, I could see an argument for investing in restoring the ecosystems that were destroyed. But 'de-extincting' a species without addressing the root causes of that extinction is idiocy.
Realizing this, these types will give up on re-introducing the original organism and instead create a bioengineered version that can survive in the changed world. I fear this path will not end well for us.
Developing and injecting genetic resiliency into existing populations isn't the worst thing in the world. Additionally adding animals that can only reproduce sterile offspring would be an amazing tool for dealing with invasives. That kind of practical work very easily follows from this R&D.