https://www.pcgamer.com/frontier-understands-demand-for-jurassic-world-evolution-mods-but-theres-a-balance/

Frontier's Jurassic World Evolution will not have mod support, as Frontier has previously explained. Which seems a shame, given the vast catalogue of player-made projects the developer's Planet Coaster boasts. In conversation with Phil at E3, David Braben compared JWE to both Planet Coaster and Elite Dangerous, and said that while there's scope for it to follow a similar path, he himself is wary of mod support as "it means that we can't easily update the game."

Braben explains that while Elite doesn't explicitly support mods, it does have third-party tools and third-party plugins which act in a similar way. "With mod support, people almost assume we're doing it out of some Machiavellian [plan]," says Braben. "What we don't want, though, is the game going in multiple directions and we can't touch the code—because then you would trash all the mods."