I agree that the article is not the greatest but it does explain a bit:

Last week, the Clean Budget Coalition – a group of non-profits such as the League of Conservation Voters, Environmental Defense Fund and Public Citizen – identified at least 17 of these “climate poison pills” in appropriation bill drafts. Among them are amendments that would prevent the federal government from purchasing electric vehicles or building EV charging stations; block funding for the Green Climate Fund, which helps developing countries meet their climate goals under the Paris agreement; and prohibit funding for a Department of Energy initiative aiming to send 40% of the overall benefits of certain federal investments to flow to disadvantaged communities.

It sounds like they 1) don't want to support funding anything that hurts the fossil fuel industry or makes us use less oil and 2) don't want to give free climate change mitigation help that goes to communities (instead of business or at all? I don't know). When you put yourself in the mind of someone who doesn't believe humans cause climate change and gets huge amounts of lobbying money from the fossil fuel industry, it makes sense.