Just a differing opinion here...I overhead water and occasionally mist my VFTs (just to rinse dirt off) with no ill effects. But my plants are outside where the air circulation and sunlight is good and they dry off quickly. They are, of course also in saucers of water. They are topwatered only when it looks like the soil is getting a bit dryer than it should be. Topwatering isn't any different than the good rain Mother Nature provides.
I flood my VFTs planter with water so they are sitting in about an inch of water. When the excess water finally sinks into the soil, I use a mister to clean any debree from the leaves left by flooding the pot. Been doing it this way for years and my plants have never had crown rot or any other fungal problems.
Occasional top watering is good: it leaches out any accumulated salts or nutrients. I use both overhead and tray watering for my outdoor plants. The topwatering helps cool the roots when the plants are in full sun as I keep them. I occasionally mist the plants, esp. on windy, hot days.