Can't say I've experienced so many of these anomalies or concerns with oil changes. Which is weird, they must actually be anomalies and not really concerns, because I've changed a schittload of oil.
It's just something I do.
Drain oil (sometimes 2 min, sometimes 20), change filter.
Reinstall filter and drain plug (not necessarily in that order).
Dump the required amount of new oil down er throat and....done.
I don't look for excuses to change it 4x more than needed, no reasons to try to get every last mile out of it (most of the time, sometimes chit happens).
Don't obsess over brand of oil, but do believe in using quality filters.
I did lose the oil out of my snobike once and cold seized the piston even though the engine was nice n hot. That taught me to make sure I tighten ALL the drain plugs, lol.
Maybe oil and oil changes lost their luster early on since I did like 10 of them twice a week and more sometimes.