Capacitor with Tasmota bulb for no neutral switches?

Hi, I was looking into the process for installing the capacitor for the no neutral switches, and it sounds like the capacitor isn't always needed. Most people seem to be using them with "dumb" light bulbs though, so I can't find any info on whether the capacitor is needed with smart light bulbs. I expect to leave the switch's relay on 24/7 and the switch will only be sending MQTT instructions to turn the smart bulb on/off, if that makes any difference. I'll probably also get a 3-gang one that'll only have the one bulb connected to it and control other smart devices.