The other companies did not provide a reason for their departure.
X, formerly Twitter, is owned by tech billionaire Musk. He has been criticized for publicly endorsing European far-right parties, and he serves as key adviser to U.S. President Donald Trump.
Musk’s X has also been under investigation by the European Commission over its compliance with the bloc’s flagship content moderation law, the Digital Services Act (DSA).
Under Trump, Musk is heading the so-called Department of Government Efficiency (DOGE), which has slashed federal agencies and cut international aid.
Walloon public bus company TEC last week announced its departure from X. “The TEC on X, that’s over,” TEC posted.
The decision of Belgian transport companies follows a wider trend of news outlets and nongovernmental organizations leaving X.
All of the companies have accounts on Facebook, Instagram and LinkedIn. STIB also has an account on TikTok.
