Are SitePoint units pole tilt compensated?

Yes. Tilt compensation is a feature in GNSS/INS receivers that lets you get an accurate ground position even when the device (like a survey pole) isn’t held perfectly vertical; the system uses its internal inertial sensors (gyroscopes and accelerometers) to measure the angle and direction of the tilt, then calculates where the pole tip is,, so you don’t have to keep the pole perfectly upright to get precise results.