He had reached a physical limit where, without the help of the Creation power from the purple little dragon, even his Life Origin would shatter upon breaking through.
If Jack Clark survived, his cultivation would still be severely regressed, losing his foundation.
This was why he did not burn his Vitality to forcibly maintain the stay of the Destruction Emperor Dragon and continue to slay one or two more Demon Gods.
Clearly, his previous action to exploit the BUG seemed to perfectly solve the erosion by the Power of Time, but that didn't mean there were no problems at all.
The Space-Time Summoning Technique involved time, space, and even reversed causality, so some 'injuries' were invisible.
Whoosh! Jack Clark's figure flashed, turning into a golden red light that shot into the sky, speeding towards the rear of the Purgatory Empire like a beam of rainbow light.
...
Boom! Boom! Boom!!
