Hunters are mere mortals, unlike much of their prey
No, hunters are not crippling themselves. They are mortals in a world filled with supernaturals who have a natural advantage over them. See the description on the Hunter sheet:
Determined and fearless, the Hunter is a mortal who has taken up a cause
against the darkness around them, perhaps because they were trained to
stalk the night or because they were born with the power to protect their
people. They carry a heavy burden, one that would eventually crush anyone.
How long can they keep from becoming what they hunt?
Compare to the Vamp:
Strong, fast, eternal in age, and insatiable in hunger, the vampire is a pure,
unadulterated predator. They are a monster, a twisted reflection of the
person they once were, doomed to walk the earth and feed their hungers.
Keep your distance.