Half the world is facing China's shenanigans. Lithuania is just less opportunistic. They still remember what happens when a powerful nation eyes your territory.
Yes, working for an Eastern European government it was nice to see strong push back in the region but especially from the Lithuanians who take strong stances against authoritarianism (e.g. they have also been strong supporters of Sviatlana Tsikhanouskaya against the Lukashenko regime). It is partially because they depend so heavily on American defense and know that they need to be totally behind the US' stance on everything and can't risk getting too close to China - the benefits are far outweighed by the risks.