Can Canon AF do real time tracking of objects (not just faces,eyes,cars,animals etc)?

Just as a slight warning, as I have an R, R5, Z6 and a Z7 and can do the direct comparison and due to the other people stating no issue with canon with this method:

There are clear differences in the "performance" of the "lock any subject and recompose tracking" feature. So yes, on paper Canon can do this and yes in real world use it often is functional but it really depends on the subject and how "well" the camera AF likes the spot of the object you selected for tracking. I already described the quirks of the Canon implementation, but to recap again:
AF wandering on the object growing / shrinking focus area, not being very sticky, ..
On top there is one cool feature missing: The Nikon seems to store some kind of template of the subject you selected in memory on button press. This means the object will be recognized again if it shortly leaves the frame and comes back into composition. This feature is definitfely absent on the Canon cameras I have.

Overall with the Nikons I actively use this method during normal day shooting, on the Canons not at all. (but to be fair: AF in general tends to be better on the R5, which means it often does what I want anyway without having to rely on the described technique, sometimes I miss it anyway, especially when not shooting any of the detectable subjects)

On a scale of 0-100 (with 100 being ideal performce and 0 meaning total absence of the feature) I would rate it: 60/100 (EOS R5) vs 85/100 (Z6/Z7).

This might sufficient for your style of shooting though. I would advise to check and compare this feature in the store of your choice.

For the Nikons it is important that you have to setup this method properly first (bind e.g. FN1 to enable tracking), then you can switch from any focus mode directly to the predefined AF area tracking mode on a single button press and directly back to your previous mode again by another press on the same button. Something that is missing on the Canons as well, here you can only cycle through preselected modes to get full control. You can switch to different focus modes on the fly by binding a button but you have to hold down said button and will not be able to recompose on the R5 while it is being pressed. Again a plus for Nikon.