More than the cost of not posting on X.

That cost should be $0, so that's not the issue.

That cost being $0 would be the most extreme case of the issue.

It lends legitimacy to a declining site controlled by a white supremacist and filled with more neo-nazi’s by the day.

The fewer legitimate organizations posting on twitter, drawing eyes and views to the site, the better.

Its a bit silly to say that they are declining. For its specific niche (mass short form/viral content) there simply aren't any relevant competitors that even come close.

Yes but they say the cost is not worth it due to the impressions they get, not that's it about politics.