Then maybe those todos are not todos but just regular comments?
Edit: And if you put them in a tracker, they'd be distracting and confusing for team members less intimately familiar with the codebase, e.g. a PO. You could also choose a word other than "TODO", as long as it won't produce a ton of false positives in a search.
Even better: for understanding why some code does this surprising or seemingly complicated thing it's doing