Dodging the DMA only has implications for Twitter advertising and federation, I think.
Basically, Twitter is not seen as a monopoly on the microblogging market, but it is still a very large communication platform that must pay special attention to moderation practices.
I imagine the brunt of Twitter's argument here is that they have strong competition from Bluesky and Threads, so are not seen as a gatekeeper in the market for microblogging advertising.