Republicans control a minority of Congress right now but will likely control a majority by 2022. Maybe both branches and the Presidency in 2024. Ordinarily we like to pretend that political action doesn't affect your business, but Trump made it pretty clear that he's willing to retaliate against political enemies using the power of the state [1]. This feeling may not be broadly shared, but currently Trump is the most influential person in the GOP and a leading candidate for 2024.
Yeah, I agree with you generally (I don't think Congress is that important in this context; it's more the Executive Branch), I just don't see how that supports the above poster, unless one assumes that a Republican is going to win in 2024.
If there are two parties and you think one party might abuse the Presidency to help/harm your business, and the other won't... which one are you going to spend time ingratiating yourself with?
[1] https://slate.com/business/2018/03/donald-trump-wants-to-get...