I really always thought you wanted to water until run off.
I'm in the same camp as yourself. Will always water until runoff regardless. Media should be properly saturated and allowed to drain. Period.
Soil or otherwise, organic or not.
Better assures soil saturation.
Avoids chronic overwatering/underwatering.
Avoids build-up of silts, clays and dissolved solids.
Helps condition and maintain the soil.
I've never understood the fuss people make about losing microbes or nutrients either. Nutrients are easily replaced and microbes multiply at such a rate it barely matters. Can double in numbers every half-hour.
Besides, nitrogen deficiency is the #1 sign of a healthy garden, or so the saying goes.
And, it really doesn't wash the nitrogen out so fast in my own limited experience. Takes a bit of time.
By which time, it's time to top dress or pot up, anyway.
Shouldn't have yellowing bottom leaves.
It's telling newbies not to water until drainage that kills so many plants, in my humble opinion.
Chronic overwatering and overfeeding, classic.
Fastest way to kill a plant there is.
Gets us all.