You guys are blowing this degassing and O2 stuff out of realistic proportion for a pond that well water is being introduced.
Degassing and O2 introduction is from raceway systems designs, where all their water comes from wells. Ya all have a fraction of that!
This procedure may help, but not really necessary for a pond.
Esshup dumps straight well water in his pond. Did ya see the hose?
Not an issue, but like the creativity!