1) Control of the right. They don't want alternative groups and messages to their own because they want to control the right of the political spectrum. More radical groups that oppose them from the right don't benefit them and often create problems for them.

2) Appeasing the elites. These countries are under tremendous pressure from the EU and global financial institutions. Poland is highly dependent on the outside world. Poland doesn't really have any major companies but is a European outsourcing country and companies like Airbus and german car companies are moving engineering and production there. The EU gives Poland billions every year and without NATO Poland could easily be steamrolled by Russia. Without western financial elites Poland would be like Moldova. The EU pays for the modernization of Poland's electrical grid and is the reason why Poland's trains are modern and not trains left by the Soviets.

Poland has a tough balancing act, they fundamentally disagree with the elites on certain issues at the same time they depend entirely on them. They can't start too many fights with the globalists and they have to do things to make them happy. Often they chose to do things that don't really bother them but make the globalists happy like supporting Israel or sending troops to Afghanistan. Polish politicians don't care about some village in Gaza and if that keeps them from getting EU sanctions for not becoming a third world country it is worth it for them.