Why do chemical reactions favor increased oxidation at higher temperatures?

Because oxidation is thermodynamically favored reaction (delta G is
always negative) and upon heating, you can avoid the kinetic product
by breaking the high activation barrier with the energy coming from
high temperature.

nature fvours oxidation processes for example auto-oxidation wich
proceed withot the presence of any initiater only in the presence of
light and atmospheric oxygen even at room temperatures to give more
stable produts( thermodynamically stable).