As a fellow 'Grandpa' let me point out what you missed in what IP (he is a fake hipster BTW) said.
He is not disputing changing the oil before you park it, he is disputing changing the oil before you park it and then in the spring changing it again.
" I will never understand why people change their oil before sticking the bike in storage, just to change it again in the spring. "
He raises a valid point. As long as you are not firing the bike up during the winter and creating condensation in the crankcase there is no reason to change the oil in the spring. And even if you did start it during the winter changing it would be debatable as the minimal condensation would burn out of the oil in about 20 miles.
Damn old people.