If the people who click the links in the email and later click on the URL in the page are the sameone who have been sent the email, Marketo will track all the clicks.
The problem will arise if people are forwarding the emails one to another. For instance, if the email is sent to A, who forwards it to B. If B clicks and if B is unknown to Marketo, Marketo will think that A is clicking. Furthermore, all clicks and navigation done by B in the future will be recorded as A, until B fills out a form.
And of course, for this to work you will also need that people have not activated DNT nor navigating privately.
Thanks makes sense☺