Old wiring and Z-wave switched: No Neutral. Any options?

One problem. Looks like according to the web information linked, the micro dimmer and micro switch cannot control LED bulbs “with a trailing edge”? Is that accurate and what means it? (Are the standard Cree and Philips bulbs I’m buying at Home Depot going to present a problem?)

"With LED lights.

For the control of LED lights with a trailing edge, Z-Wave dimming products are not suitable."