Coalitions are built by uniting various factions and their interests. Cutting the administrative state is #9 on Trump’s platform: https://www.donaldjtrump.com/platform. Just because it wasn’t the top reason doesn’t mean it wasn’t part of the platform that people voted for.
For example, I don’t personally care for RFK. I’m the opposite of an anti-vaxxer, I think the government should vaccinate you in your sleep. But he was part of the pitch and MAHA was part of the coalition and I voted for the platform and was happy to see him confirmed. That’s how political coalitions work.
If Newsom explicitly runs on X, Y, and Z, and you vote for him for X and Y, I think it’s fair to say that you’re at least acquiescing to Z in return for forming a majority coalition.
For example, I don’t personally care for RFK. I’m the opposite of an anti-vaxxer, I think the government should vaccinate you in your sleep. But he was part of the pitch and MAHA was part of the coalition and I voted for the platform and was happy to see him confirmed. That’s how political coalitions work.