Samsung released One UI7 to S25 Series officially on 7th February. S24 Series which has different tech it's currently in the final stages of beta which will see S24 and S23 series get updated I suspect in the next few weeks.
Samsung UI has far more functionality than many other manufacturers hence why they may have been put sooner. Pixels will always come first as Google Own Android.
But you have choice. If you want the next OS earlier, with less functionality and a weaker offer, then you are welcome to buy a pixel. No? Didn't think so as pixel range have their own issues.
I am not employed by Samsung nor do I receive any remuneration as a Samsung Members Star.
My device is an S25 Ultra.